How do I decide when to pick out some FMQ work?

I try not to pick out my free motion quilting--- but occasionally I feel like I just have to. I am by no means an expert at free motion quilting. I still feel like I am learning with every project I do. When I see an area that I am not happy with I leave it for a few days. After this amount of time I often decide that it doesn't really bother me enough to pick it out. If after that amount of time my eyes keep going back to that spot and resting there it just has to go. Below I have circled an area that I just couldn't live with. I picked it out and did it over. My eyes no longer rest on that spot.

Was the trouble worth it? I think so. I had to carefully pick out enough thread so it was long enough to tie knots any bairey them. It took about 15 minutes of my time.