But don't let your arms crossed. Roll up your sleeves and (Acts 26:18) "...to open their eyes so that they may turn from darkness to light and from the dominion of Satan to God, that they may receive forgiveness of sins and an inheritance among those who have been sanctified by faith in Me". We have a call to advance the Kingdom of God and spread the good news of salvation. Don't give up, because the seed that you plant today will be given the growth. When I was a teen the school prayer/evangelism team preached the gospel in that school in the 1970's. We did personal evangelism and services just outside the school gate. Not long ago I found my high school graduation class of 1979. Several of the classmates got saved in their adult lives, and some of them became pastors. Don't give up and do not feel discouraged. The Word of the Lord does not returns void.