I think spending the time to learn how to be your own best friend, perhaps this ...

I think spending the time to learn how to be your own best friend, perhaps this might be especially valuable or undervalued among the HN audience. Speaking from my experience I feel that I'm relatively driven but that often goes together with being my own very harsh critic. One way to descriibe this is that I wouldn't spend any time with someone whom spoke to me the way I sometimes speak to myself when things go wrong. The times when, instead of beating myself up, I'm able to say to myself it's ok not to be where I thought I would be by now it my life, I've been more peaceful.

So my answer to OP's question is: learn to be compassionate with yourself.