Feedback isn't necessarily bad, but it needs to be specific to have any ability to help you. What you mentioned above would irritate me in terms of feedback because it doesn't tell you specifically any examples that may have happened to avoid. So I would ask my supervisor if they could give me some specific examples of what needs to be improved rather than such a broad statement.

And who we are at work often doesn't match up exactly with our personal lives, because we put on a professional face at work and leave a lot of stuff at the door to get the job done and bring home the bacon. As far as people who lie to get ahead, I have no use for them, and I find that their lies don't serve them in the end because they end up failing at whatever job they were given based on their lie. If you value honesty, then be honest. You don't have to lie to get ahead.

I commend you for saying you want to stick with the new job for 2 years, but please realize that you don't have to, and you're not a quitter for deciding that it may be in your best interest to change jobs. I assure that your employer has very little loyalty to you and would fire you if they needed to, so no need to be so loyal to them. Try not to be so strict with yourself (I think this comes from the perfectionism you mentioned) that you must achieve X goal, if X goal is bad for your health.

Good luck,
Seesaw