Paying it forward is the way to go, or at least that's what science has to say about how you should behave in life.
According to the people at Brit Lab, in the long term, survival of the fittest doesn't always exactly pay off. According to their theories and maths, while taking advantage of your circumstances might offer you a short-term win, constantly striking out on your own and not working with people heightens your own chances of being done over because you get a bad rep.
There's plenty more to it than that, but the lesson here in short is 'don't be a dick'.
Via YouTube