Hard knock Life

Life... why does it have to be so complicated and hard sometimes? Why do we as humans have to mess up and sin? Why do we continually have to hurt people either physically or emotionally or spiritually whether directly or indirectly? Keep secrets... lie... hurt.. pain.. cries!? Why do things get even more complicated with people whom you care deeply for! God is truly amazing for what he has done and can do and still will do! I know that I am loved and cared for.. but I regret the fact that those closest to me have to have and share in my burden and be hurt by me... The past is done and I cannot change it... but it is for sure still there and still hurting and it drives me crazy cuz I can't change it! I have an amazing GF and she continues to astound me daily! I trust in God cuz he knows what is suppose to happen! But doesn't change that I am scared?