Whenever you get frustrated about a tool, a process, a company, a product, or an interaction you have (basically anything that is not a personal relationship), write it down.

Keep a list of these. Come back to them once a week and think about what you would like to be different or how you would make your experience better. Cross off any frustrations that you would not pay money to fix.

Refine this list by determining if:

a) Others (people) have similar frustrations to you

b) Others would pay money to fix or reduce their frustrations

That should get you started in the right direction.