I don't know how to solve this problem.
I wish I knew how to solve this problem.
It annoys me that my sister always complains about everything.
I wish my sister wouldn't complain.
It annoys be when my boss criticizes me.
I wish my boss wouldn't criticize me.
I can't motivate myself to learn English.
I wish I could motivate myself to learn English.
I can't swim.
I wish I could swim.
I have to work this weekend.
I wish I didn't have to work this weekend.
My best friend is not here.
I wish my best friend was here.
I'd like to be fitter.
I wish I was / were fitter.
I can't go on holiday this summer. I'm broke.
I wish I could go on holiday this summer. I wish I wasn't/weren't broke.
My partner wastes money. It annoys me.
I wish my partner wouldn't waste money.
I'm lazy.
I wish I wasn't/weren't lazy.
It drives me crazy when people talk loudly on their cell phones in public places.
I wish people wouldn't talk loudly on their cell phones in public places.
My best friend lives far away from me.
I wish my best friend didn't live so far away from me.
I don't have free time.
I wish I had more free time.
I don't have a well-paid job.
I wish I had a well-paid job.
I'd like to have a bigger flat.
I wish I had a bigger flat.