sorting through thoughts

Do you think we truly always see "the grass that's greener on the other side"?
I thought I had the job thing settled- then I spoke to a local colleague who suggested that I supplement with PT work either at my current job site doing music therapy or contract/private practice music therapy...
I am sincerely concerned that I will have these opportunities to change jobs every 2-3 years and never feel quite settled... Everyone can easily point out and see the positive in a job that you are considering. However, at the same time, you see the negative in your own job and that just makes it all that much more confusing...
I could do a pros vs cons list- The thing is: It's not as easy as the number of items, it's the weight of the items that matter.
The harsh reality?? - I am wired to try to be perfect. I will always see what I am doing wrong and what I could be doing better. I get excited about change because I can't see the challenges that await. Maybe, upon realizing my 'wiring', I need to work at prioritizing each and every day. I need to have faith that these things will work out......