A thought is harmless unless we believe it. It’s not our thoughts, but our attachment to our thoughts, that causes suffering. Attaching to a thought means believing that it’s true, without inquiring. A belief is a thought that we’ve been attaching to, often for years.
When you’re focused outside and believe that your problem is caused by someone else, rather than by your attachment to the story you’re believing in the moment, then you are your own victim, and the situation appears to be hopeless.
Do you want to be right more than you want to know the truth? It's the truth that set me free. Acceptance, peace, and less attachment to a world of suffering are all effects of doing The Work. They're not the goals. Do The Work for the love of freedom, for the love of truth.