effect of age on thoughts

There was time when I used to challenge everything. Used to think that I am running the show of my life. But today when I am 25, I whole heartedly agree to the mere idea of me being just a puppet in almighty hands of mothernature. Surely this doesn't mean that I should stop acting and do nothing. It only means that I should keep doing wtever is in my hands and keep trying to accomplish my targets, until fate is revealed to me...................... :)