You may already know this, but you may be an empath. I am one, and it can be hell but it can also be a blessing and very useful. You just need to learn to, first protect yourself, secondly, 'control' (for lack of a better word) your tendencies and, thirdly, learn to hone your empath skills for the good at least most or some of the time. There are tonnes of sites and a lot of information about it out there, so look for it. I don't know if this site is any good really but it seems to have a page of resources that cover protection, which is what you seem to be wanting the most of: http://www.empathtest.com/index.php Have a look, but by all means continue searching.
Good luck and bright blessings,