Eating in the cafeteria should not be just a daily exercise in feeding ourselves but rather can be an opportunity to sow and reap in the field that is right there in front of us. God is working on a lot of chains around you. You may have the privilege of being the last link in the chain between that person and the Lord. On the other hand, the word you share may be just the right link now for a chain that will be completed next year. So don't be disappointed if that person doesn't become a Christian immediately.
Every link is equally important in a chain.
After I get it all together myself, I'll be ready to verbalize in the field. The Bible speaks of reward for faithful service, and pictures it as receiving crowns. There is reward both on this earth and in heaven for faithful links according to verse 36. Reapers who have the privilege of being the harvest link in the chain to eternal life draw wages even now. If you haven't experienced these wages, then get out in the field where the links are being hooked together.