"Action is the foundational key to all success." Pablo Picasso

In my opinion success means that you tried your best to do something and you accomplished it. When you really want to do something and need motivation, and then when you do it you feel happy and joyful that you succeeded in something that many other people did not. It's also something you have to gain or lose friends and do some things that you might not want to do, but at the end of the day that decision will make your life different and a success.
If it is something that I really want to do then I will do whatever it takes to make sure its a successful task. There are a lot of things I would sacrifice for something that I think will later be a success. But I do feel that those things and decisions that I might make will be bad, but at the end of the day it will be a lesson learned.
There are people that might sacrifice too much for success, but who am I to judge.