I lost the motivation to continue.
"If I lose, I will run for Senate of the United States against Mitt Romney in 2024. I will not go away."
"And if I lose, I will then run for President of the United States in 2028 since that is the first year I will be eligible. I will not go away."
This might reflect poorly on you in the eyes of an employer wondering if you were distracted by political priorities, and/or not seeing it through? Could explain the job fortunes.
Let's just say that there was an external reason why I lost motivation that I could tell a potential employer, and they would understand. I won't repeat it on HN though.
In reality, I know why I'm not getting a job. I'll not a good fit for sterile office work. And that's okay for both me and companies; their are right to avoid hiring me.
I'm mid-40s and have worked for myself since my late teens. I recently realised that I'm likely unemployable in a traditional office sense, and so will need to make everything work off my own back until retirement. Things are good now, but prospects and perceptions change quickly with age, depending on your field.