Ever since you were little you always get thoughts in your head and just keep repeating them is that bad?

Depends on what the thoughts are about. If they about violent acts to others or something like that then yes seeing someone would be the best option. If its about a bad experience as a child then again concelling might be a good option. In any curcumctance obcessing over anything is is unhealthy and should be properly discused with a concellor or whom ever is qualified. Talking this out with outs friends family helps resolve feelings.