Being a dad and an ex can be a frustrating and stressful time.
I personally, have a son and my ex wife is a living nightmare. To relax, apart from the obvious thing like socialising with friends/family etc. I play a game called Torn which is a really cool game. I have played for 4363 days (on and off) and it helps me relax and it gives a new focus and challenge, at the same time I have made friends with other people from all 4 corners of the globe.
If interested, please see the link below and sign up;