I met someone who said that when you start looking back and say we use to do this and wanted to do this, it means you have grown old and if you look fprward and say I will do this in life it means you are young. Its right and it has both the aspects. First is that we definitely have to grow and life would not wait for anyone. So better you do something which you want to do now or you will not get anytime in the future and more over, in future you would have future things to do. Second thing is you grow old in real terms when you start looking backwards in life instead of looking ahead. So many times I meet people who say I wish I would have done this and what I have realised over the time that we do not regret what we have done, we regret what we have not done as we feel our lives might would have been different if we would have done that. So if you do not want to regret your life do whatever your heart says. Your heart is your source and is the voice of God inside you. Its your driving force, if you ignore its voice, you are ignoring the voice of your soul. Follow your heart with the purest intention of helping everyone and not hurting everyone and get going with the things. If your intentions are pure, no obstruction would be insurmountable and you will reach to your destination in the end. Do not hold yourself with the fear of unknow, because in life we are mostly afraid of fear of unknown not the know fear. BEcause for known fear we are prepared and we know how to handle. So be free and be a doer. get going with the things.