That is completely frustrating when our coworkers have that kind of power. I'm sorry you had to go through this and you're feeling this way. I've lost plenty of friendships with coworkers and then the regret makes me feel worse. So I feel your pain. But as long as you have the attitude that you can and will achieve greatness, it will happen. I know easier said than done, but it is doable. If you're doing everything you can and no results, maybe a med adjustment can help. Either way, you're going to get through this. I got your back!