Billions of people deal with a nail-biting habit at some point in their lives. Many will go to great lengths to try to stop. And while not all of us are nail-biters, most of us do have a habit we'd like to kick. So what's the best way to break one?

Research shows that intentions alone often fail to lead to long-term behavior change. This isn't to say you can't break a habit. Rather, by understanding the basis of habits, you can create better plans for changing them. For example, we know habits are often affected by environments and routines. Lying in bed may cause you to endlessly scroll through your phone, or watching TV on the couch may lead you to grab a sugary snack.

One of the most effective ways to manage behavior is to identify these locations or times of day. Then try to modify them by changing your routine or creating obstacles that make it more difficult to perform the habit in that space. Moving, switching jobs, or even starting a new schedule, are particularly great times to break a habit or build a new one.

One 2005 study tracked university students' exercising, reading, and TV-watching habits before and after they transferred schools. When students were no longer around old environments and routines, their habits, even the strong ones, significantly changed.

For behaviors like nail-biting, a practice called habit reversal training can be helpful. Developed by psychologists in the 1970s, the aim is to change a habit by replacing it with another one that's less detrimental. The training requires you to analyze and understand your habit cues, so you can effectively step in at the right times. For example, if you tend to bite your nails at work, keep a fidget toy at your desk in advance. Then, if a stressful email comes in, use the toy when you feel the urge to bite your nails.

Breaking a habit takes time, so remember to give yourself grace and have patience through the process.

I'm an 18-year-old pre-medical student, tall nd good-looking, with two short story books and quite a number of essays my credit. Why am I singing such praises of myself? Just to explain that he attainment of self-pride comes from a great deal of self-love, and to attain it, one must first learn to accept oneself as one is. That was where my struggle began.

Born and raised in Africa，I had always taken my African origin as burden. My self-dislike was further fueled when my family had to relocate to Norway, where I attended a high school. Compared to all the white girls around me, with their golden hair and delicate lips, I ,a black girl, had curly hair and full, red lips. My nose often had a thin sheet of sweat on it, whatever the weather was. I just wanted to bury myself in my shell crying "I'm so different!"

What also contributed to my self-dislike was my occasional stuttering (口吃), which had weakened my self-confidence. It always stood between me and any fine opportunity. I'd taken it as an excuse to avoid any public speaking sessions, and unknowingly let it rule over me.

Fortunately, as I grew older, there came a turning point. One day a white girl caught my eye on the school bus when she suddenly turned back. To my astonishment, she had a thin sheet of sweat on her nose too, and it was in November! "Wow," I whispered to myself, "this isn't a genetic(遗传的) disorder after all. It's perfectly normal. " Days later, my life took an-other twist(转折). Searching the internet for stuttering cures, I accidentally learned that such famous people as Isaac Newton and Winston Churchill also stuttered. I was greatly relieved and then an idea suddenly hit me—if I'm smart, I shouldn't allow my stuttering to stand between me and my success.

Another boost to my self-confidence came days later as I was watching the news about Oprah Winfrey, the famous talkshow host and writer—she's black too! Whenever I think of her story and my former dislike of my color, I'm practically filled with shame.

Today, I've grown to accept what I am with pride; it simply gives me feeling of uniqueness. The idea of self-love has taken on a whole new meaning for me: there's always something fantastic about us, and what w need to do is learn to appreciate it.

It is food news guaranteed to put a smile on your face. Scientists have found that eating dark chocolate appears to lower the risk of depression by a quarter. While 7.6 percent of the 13,000 people surveyed reported depressive symptoms, just 1.5 percent of the chocolate eaters did.

The study is the first to examine the association with depression according to the type of chocolate consumed. The team assessed data from 13,626 adults from the US National Health and Nutrition Examination Survey. A range of other factors including height, weight, marital status, ethnicity, education, household income, physical activity, smoking and chronic health problems were also taken into account to ensure the study only measured chocolate's effect on depressive symptoms.

After adjusting for these factors, it was found that individuals who reported eating any dark chocolate in two 24-hour periods had 70 percent lower odds of reporting clinically relevant depressive symptoms in the previous two weeks than those who reported not eating chocolate at all.

Chocolate contains a number of psychoactive ingredients which produce a feeling of euphoria. It also contains phenyl ethylamine (苯乙胺), which is believed to be important for regulating people's moods, Dark chocolate also has a higher concentration of flavonoids (类黄酮), alternative when choosing chocolate.

However , British scientists urged caution about the findings, suggesting that the decision to eat dark chocolate could be linked to other health factors. For example people who choose dark chocolate may be more health conscious in general, which is known to protect against depression. Depressed people are also more likely to crave more sugary fatty foods and so could be less likely to pick a dark alternative when choosing chocolate.