In life you will always encounter challenges, hardships, limits. But the one thing that you'll always have to do is go higher. Never settle or stop because things are difficult, continue climbing higher and once you reach the top, the feeling of being whole will be waiting for you.
"Seriously, if you always put limits on what you can do, physical or anything else; it'll spread over into the rest of your life. It'll spread into your work, into your morality, into your entire being... There are NO limits. There are plateaus, but you must not stay there, you must go beyond them. If it kills you, it kills you. A man must constantly exceed his level."- Bruce Lee