Some will just view self promotion, pumping one’s own tires, as too egotistical or annoying, feeling it lies close to being narcissistic. So what you need to do is find the balance, the perfect middle ground promoting yourself while still being adored by others.
Most also have no idea on how to promote themselves properly. Some have a natural gift for it, as the trick appears to be finding that perfect stance somewhere between being a wallflower, an introvert, to talking too much and too loud.
So somewhere there in …