How do you survive with asthma?

I had just found out i have been having asthma symptoms. How do i breath better? even thought my doctore seem to give me lots of precripstion still im not breathing that good, i heard it also have somehting to do wih your diet,excersise and stuff like that. Please help me because i have never experience asthma, so if you have please give me some tip on how to breath better. thank you for breathing