The promise is that those who seek God, will be allowed to find Him. Those not desiring His will not have their prayers answered. God's will is that you use the spiritual gift in the ministry He has assigned to you. You have a job to do, a function to perform, a ministry to execute. God never intended His assembly to be a group of spectators with only a few doing the work.
All members are servants of one another.
If it means I must do without something I would like to have, I will be content with what God supplies. If it means talking on a responsibility I would rather not have, I will perform that task knowing that God is my help and strength. Watchman Nee states that there are four steps in knowing and doing God's will. Let Us Pray , page 24. God promises to supply all our needs.