|Learn from many sources|
I was very lucky with my Mentor, from first weeks, two years ago, continuing, whenever I needed. Alas, not all had similar luck. So be aware who do you choose as Mentor, whom you listen to, learn from. They can help you a lot.
Some alas, will only push you at the end down by offering bad advices. Learn from many sources, be open to many. Then, listen and use your values to decide.