Do you or have you bad habits. Any suggestions for letting go of them?

I have a couple of really bad habits. NUmber one would be biting my nails. I've been doing that ever since I was a kid and can't seem to stop. POsting responses on Mylot while drinking heavily is coming a close second at the moment....can't seem to pull myself away and get to bed like I probably should.

My dear frien how can i suggeat you a problem me myself in the problem of overeating.i started at the time of my former job lot stress lead me to overeat .i eat a lot of junk foods though my tounge is coated it doesnt tasty still my mind is going after those things fried things,toffees i lost all my money ,i met with an accident while driving coz my mind was on near by shops at that time .i resigned from the job.icannot concentrate ,but the funniest thing is that as i am going through this bad habbit i heard about lot of atrocities going in the medical field .oh when i hear about them i get angry i learned about self healing .healing through changing diet and breathing exercise ,meditaiton etc and i am continouly struggling and i am doing these things al ot meditation and breathing exer et c thouhg it give me lot of concentration and peace of mind still my mind every week for 2 or 3 days goes after bad foods again i gain contrl again out of control.i lost my hunger and i am going to fast or trying to fast untill my hunger comes back.i hope it will work atleast this time i trie it several times for two days fast next days heavy food .oh my goodness it is really is a struggle .but as i going on with my studies in self healing i have noted one site or t.v channel of yoga expert baba ramdev breathing technique www.divyayoga.com