I'm not qualified to answer that question as I'm not a hacker myself. But apparently Hacker101 is a great resource (https://www.hackerone.com/hacker101). I myself have gone through some CTF there and can recommend.

I think generally being a hacker is a mindset. Being able to answer a question like "how can one be a good hacker" is fundamental to that mindset.

I dont mean that in a dismissive way, I mean that to hack you are tinkering and figuring things out with your own mind rather than asking others.

Read/education

I think I could hack. I've been hacked, I've read about how people hack, and I have a pretty good understanding how attempts are made. Basically you learn the exploits that historically happen.

Worst case if you need to do something, you can Phish.