Every personality has different inherent strengths and weaknesses, morally. (And very often, your moral strength is also your moral weakness.) Every personality type also has sins they’re unlikely to ever commit, just because they’d never even vaguely occur to them as something to do.
For example, someone who is bold and a risk-taker will probably find it easier to get in trouble with things like gambling or casual sex. But he’ll also find it easier to leap into holiness at the spur of the moment.
Someone who tends toward depression also tends to be very realistic (perhaps overly realistic) about the existence of bad stuff, personal weaknesses, and so forth. It’s harder to see the good side, but it’s also harder to be fooled into forgetting what’s wrong.
So everybody is in the same boat, when it comes to personality being both helpful and leading one astray.
Just like the rest of your body, your mind is part of “Brother Donkey,” and you shouldn’t beat it up for doing what comes naturally. Train it to do better, and to use its strengths for your advantage!