To regret or not to do

Life never gives us what we expect from it. Lets say we always want or expect more so we are never able to be satisfied. I made a decision when i was in high school which was not to do anything what would make me regretful and to never regret whatever i would do. I almost kept this promise in my entire life after high school. However once again i am facing and trying to overcome feeling of regret which is difficult than i could concieve. I try to live as a tide, make it fast and straight which also causes me lots of problems. Before i regret what i ve written i should finished the post because every new regret hurts me harder than before.