Hi everyone. I am looking for advice on how to let go of my resentment. 

My husband and I have 2 young kids. 3 and 1. Hubby works alot so I do 98% of the parenting. SS (8) moved in with us because BM wants to go study abroad. I have developed so much resentment that I'm stuck with the burden of childcare while both his parents roam free. 

Please show me a different perspective. How to be less selfish. It's not SS fault. But I hate the workload that I now bear from him living with us.