Burnout

Hey so I've been going to the gym for like past two years and in recent months I've been feeling like in forcing myself to the gym like it used to be like me enjoying myself after each session but now it's like I want to go gym but it feels like a heavy work like I'm forcing myself to do every exercise. I thought it was a discipline problem and it would vanish but it's getting worse and worse. I attained my goal I was lean but now I'm not...but that shouldn't stop me from going and getting more.. for anyone who had went through this kindly help ..and lemme know your thoughts