You are the sum total of everything you've ever seen, heard, eaten, smelled, been told, forgot - it's all there. Everything influences each of us, and because of that I try to make sure that my experiences are positive.
If you don't like something, change it. If you can't change it, change your attitude.
Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.