They can tell you to do more and push you into doing things outside of your comfort zone. Pushing past your limits means taking on newer, progressively harder challenges.

Why is it important to know your limitations?

Your boundaries affect your self-concept, self-respect, feelings, energy levels, and your happiness – and they also ensure that you get your needs met, and aren't being taken advantage of. ...

What does it mean to surpass your limits?

vb tr. 1 to be greater than in degree, extent, etc. 2 to be superior to in achievement or excellence. 3 to overstep the limit or range of.