i wouldn't let the perfect be the enemy of the good. or in your case, the great! a strong and active 230lbs is a great weight and i'm sure a completely different quality of life.
you literally ended your post with "maybe 180lbs is ALL I CAN LOSE". honestly, if you find yourself having thoughts like that, it might help to talk to someone. food and body image issues can happen at any weight. you might want to nip those negative thoughts in the bud and focus on being grateful for things in your life, both weight related and not.
sorry this sounds preachy, i just worry about doing the same myself after my surgery. right now, 230lbs would be a dream come true. i do not want to get there and be obsessed with getting to 210. that is not "success" in my mind.