How do we know when we have been successful making disciples?

Are we really reproducing that which Jesus expected when He said we should be "teaching them to obey everything I have commanded you" (Matt 28:18-20) In John 15 He says that He appointed us to bear fruit, fruit that lasts! This is all in the context of abiding in Him and loving one another... Actually you should read it now;

“As the Father loved Me, I also have loved you; abide in My love. If you keep My commandments, you will abide in My love, just as I have kept My Father’s commandments and abide in His love.