Who are we to decide what is prayer-worthy? I think our own doubts of what is possible tend to keep us from putting big issues in our prayers. We have to remind ourselves that 'all things are possible with God' and then we can overcome our doubts. We also tend to think we are bothering God if we talk with Him about our trivial problems. If it matters to you then it matters to God. He wants to hear from us and there is no level or scale of importance.
I've personally encountered things in my life and wished in my head that it could be changed or different. Since I didn't know the solution, I didn't think it was possible to change it. Only when I spoke out loud my problem was an answer given. My example is of my standing machine and how I stood uncomfortably for so long until it was adjusted. I think our prayer list can often reflect this type of thinking.
I know God hears our hearts but He wants our prayers too. Prayer may not change God's will for us but hopefully it will change us.
