There are two ways that I look at ‘more’.
First, there is always more that you can do, more that you are capable of. Until I’m proven wrong, I’m stating that as a fact. Every time I push myself to do more, for example, I pass the ‘test’. Similarly, this is echoed by just every mentor I follow.
Second, there is always more that others will ask you to do, but that is something completely different: you must learn where to draw the line on external demands. If you don’t, you’ll find yourself drowning in what everyone else wants from you, not what you want for yourself.
Internally, push yourself as far as you can possibly go.
Externally, push back against anything that’s not aligned with your values.