I am reading a book on study skills.

On a page it says

Tend to coast along ‘in the middle’? You have the opportunity to test out how well you could do if you aim higher and adapt your strategy. How far do you want to go? What would hold you back from achieving more? Would you get more satisfaction out of your studies if you brought more to them?

My question: What is the last sentence mean? Especially the words more and them

... brough more satisfaction or more other things?

and what does the word them refer to?