"If you train a youth according to his own way, even when he grows old he will not turn away from it." (Personal translation)
Most translations of the Bible have "according to the way he should go", however it is stretching the Hebrew to translate it that way. It doesn't mention anything about the "way he should go", but more literally just means "his own way". Potentially, this proverb is more of a warning than instruction to parents. A warning to not spoil your children by letting them have their way. Proverbs 23:13-14 echo the same sentiment so it would not be out of the question to translate in this way.
But all that to say this: there's a lot of utter nonsense in people trying to figure out who they are. People make statements all the time like "That's just who I am" or "I'm just being myself". Foolishness. There's a dangerous notion here that our personalities are static. I know a whole bunch of people (myself included) with a big handful of testimonies of how Christ has transformed them to say that personality is fluid. You are never going to find out "who you are" when who you are is always changing.
Besides, there is no sense in struggling with your identity when that's not what you want to be in the first place. We aren't looking to go our own ways, but the Way of Christ. Don't be yourself, be who God is making you to be.