Early in my career I had to do AFIS work due to lack of flying jobs. Later, I took a year off from flying to work behind a desk. Aviation related work, but funny enough, after a year it started to itch, and you just have to find a simulator and get current again. . .. .I guess it`s like this. When you`ve made your decision to become an aviator, you just have to maintain heading and no 180° turn. Later, like some thousand hours later, it does not harm to do something else. It helps you from not getting a tunnel-vision.