I'm really confused by your reasoning, because you also said that you experienced ways of handling your boredom to suffer less, and then you called it a learned helplessness, which is exactly the opposite.
By your definition an addict isn't helpless, because he can reduce his suffering by just taking drugs.
Not being able to handle your emotions, to soften them and to have some degree of control over your actions, is IMHO a kind of learned helplessness.
I think quite a few people learned to handle their emotions in non constructive ways - I certainly have my own bad habits - by doing something to feel better, watch TV, eat too much or whatever else.