words: "Even now the reaper draws his wages, even now he harvests the crop for eternal life, so that the sower and the reaper may be glad together. Thus the saying 'One sows and another reaps' is true. I sent you to reap what you have not worked for. Others have done the hard work, and you have reaped the benefits of their labor." John 4:36-38
I have had quite a few people over the years lament to me that although they try to live and share their faith they seem to get nowhere with people. Stop worrying about this! Keep on keeping on. God uses us all in different ways. Even on a farm different things are needed. I've run a baler, but I have also pulled a rake, harrowed a field, repaired equipment and changed water. But all aspects of the work are important. Be who you are, serve God where you are and trust Him to use it. In the words of the apostle Paul, "What after all, is Apollos? And what is Paul? Only servants, through whom you came to believe - as the Lord has assigned to each his task. I planted the seed, Apollos watered it, but God made it grow. So neither he who plants nor he who waters is anything, but only God, who makes all things grow." 1 Cor 3:5-7. Keep reading through that passage - it will encourage you.
Never judge your own service and effectiveness by that of another. We need to keep our focus on God and trust Him to do through us what He desires. There is joy in our lives and service. Seek to know Him and ask Him for opportunities to do so. Trust Him to use you in whatever pace and way He chooses. And know that it matters!