On being positive, try greeting each day (morning) with a smile and learn to not take life here in this reality for granted. Also try some of what we call soul searching, while you are in bed waiting to fall a sleep, try recalling to yourself everything you have ever done in your life as far back as you can remember. Your thoughts at the time something happen to make you do this instead of that, your mistakes, everything.
This is one way to get to know yourself better and turn things around and help you on the path to a better and more productive person. Yes, slow to anger and quicker still with a smile, a warm firm handshake.
Teach yourself and learn the secret of always doing more than you are paid to do and true relationships, true friends and more shall be yours.