First of all, you are NOT a failure, you always deserve to talk, and you don't need to cut yourself from people. If you are exposing your personal secrets to other people it can be harmful at times. However, it also goes on to show that you speak your heart out and you are not a complex person. You like sharing thoughts with people and that is a great quality. Who told you, “You can't think or talk wise?” God has installed a miraculous computer in your head and you definitely have some sort wisdom. May be you are yet to discover yourself. Why do you have to punish yourself severely? You are already a good person in my opinion and who told you, “You can not be a good person.” Your genes have nothing to do with your silly actions (if at all they are silly). Having said all these, you need to change your thinking process. You are thinking everything from a negative point of view instead of being optimistic. I understand it is much easier said than done but you need to start from somewhere. Since you haven't given much detail about your life I have to stop here. If I can be of any further help you can always ask me. God bless you!