Don’t take on more responsibility than you can handle.
"Don’t bite off more than you can chew, start small."
to be naturally inclined or programmed to behave a certain w...
to be at the forefront of an action or movement
to be involved in something too difficult to handle
to work very hard to achieve something
to have a fondness or affection for something or someone
As long as you are alive, there is a chance for improvement.