@graciee88,
It's very hard to get the full picture of what is going on.
It could be as you have described it, that you do constantly complain over petty things and are difficult to live with.
It could be that your behaviour is normal, and that a hypercritical and controlling partner has caused you to doubt yourself, and see yourself as he wants you to.
In either case you need to get some counselling, and possibly some distance from your partner.