I need prayer to renew my thoughts and trust in prayer and desires.

For the past couple of years I have been afraid to ask God for anything, whether it be opportunities, relationship, finances, dreams coming true, etc. I stopped asking in fear of being disappointed again. I have begun a thought process that all of my desires and requests are not being answered, because they are not what God wants for me. So I began thinking that my heart and thoughts were unpure, and unworthy of the requests. Most recently, when my friends ask me to pray for them, whether it be healing from sickness, or for promotion; I find myself just praying, "Lord, your will be done." Believing that it doesn't matter what I pray, God's will prevails, so don't ask for any specifics. I hate feeling this way, or praying this way; but I don't know what to pray or how to pray anymore. I know God is almighty and has all control. But I feel as though its useless to ask, knowing what I ask won't come to pass. Please pray for me, I need clarity, guidance, and a renewed strength in prayer. Thank you.

Nici