“I can elect to change all thoughts that hurt.”
This ability to focus your mind is your key: your ability to decide what to direct your attention toward, and, perhaps even more importantly, what to not direct your attention toward. In other words, what to ignore, neglect, starve. That means that you need to find the willingness within to look at the thoughts that come up, and when a thought is not making you happy, you acknowledge it and decide you do not want it. Then you ask the Holy Spirit to heal your mind regarding that thought.
You can choose which thoughts to think. You are not a victim to the destructive thought loops the ego mind has on sale. Pass them by and instead focus on loving thoughts, peaceful thoughts, on ideas that spell Freedom and Beauty. Focus on the flow of inclusion and expansion. In short: focus on Glory and nothing else. It abounds in you because it abounds in Creation.