Weight gain after stopping

Hey guys i had my diet locked in for 8 months then i started reta for 4 months and stopped completely, now i have been off it for 3 months and went travelling and i fell down a deep hole off binge eating and now im up 12kgs and feel like absolute shit. Im hopping back on reta today and i was wondering if anyone has had the same experience and if starting again made it easier to lose the weight 😫 i know it takes alot of effort and time to lose the weight but i feel like i am stuck in this cycle i always gain so much weight during the summer and have to start all over in the winter and i just completely lose control over food in the summer when i am travelling and i cannot maintain the weight loss😫