If I could only give three words of advice, they would be, 'Tell the truth.' If I got three more words, I'd add: 'All the time.'
The best gift an educator can give is to get somebody to become self reflective.
Advice is very easy to give, and even easier not to follow, so I don't fool with it.
Get a feedback loop and listen to it... When people give you feedback, cherish it and use it.