As the first stage of this contest is coming to an end... I would like to give my input.
Firstly, I would like to thank everyone for participating in the contest, reading your responses filled myself with positive emotions, and I'm sure it did to others.
Now, on to the question:
This question is a bit tough due to the fact that making any type of impact even on yourself, is something that is not so easy to achieve... But that should never stop you from trying. So with that being said I'd like to first state what is HARD about being positive.