Learning to Focus on Me

I work at the same place where I met my exN. Up until last fall, he worked in the same department as me. The OW works at the same company -- thankfully, a large company -- but enough that I see her.

I came back on this forum this weekend because I needed help in finally disconnecting from him and focusing on me. It's been too long.

The trouble is when I'm here at work, all I can think about is what are they doing? I know they are on vacation together right now and it's killing me. How did you ladies stop thinking about them? Any tips? Last night I went out with a friend to a cooking class, followed by drinks and just tried to keep myself busy. But sometimes at work things can get slow and my mind starts to wander. It's like an obession and it drives me nuts that I can just say "screw them, I need to focus on me and I'm better than all of this...I deserve better."

I know that part I'm holding on because I fear letting go and want validation from him -- which will never happen. I just want to wake up one day and not have him be one of the first things to pop into my mind.