I used the battery image for exactly that reason. ✅
Constantly dwelling on negatives will hold a person there and those that don't, or so I have found, are those who don't want to do the work to move themselves forwards from it. Where they are feels comfortable as they don't need to strive, to work hard and there's no chance of more failure of they don't try in the first place. Of course, there's always those with legitimate mental health issues, but many people could move away from negatity if only they didn't wear it like a comfortable coat.
And then there are those who have ownership, self-responsibility and who find the courage and put in the hard work like the guy you mention.
I'm not saying it's easy, I'm sure that bloke went through tough times and had to dig deep, but staying in place, embracing the negativity and making it the reason a person doesn't move forward seems wasteful of life to me.
RE: Positive and negative