Hey, this is such a cool cool truth. Prepare to be blessed! I looked up the "deal bountifully" in the Greek. Do you know what it says? Here goes: treat a person well, to bring to completion in the same feel as a child being weaned or a plant ripening.
Apply this to a challenge you are facing. If you stick it out, wait on God, keep believing no matter what everything looks like, you will be completed in the end, the fruit will blossom. You will be changed. Your situation will be changed. God will be glorified.
BUT, if you cut it short, if you take matters into your own hands, if you fix it yourself (which is usually only a temporary fix and often makes it worse later), you won't be completed and God won't be glorified.
Think of it this way: let's say you are thrown in jail for a crime you didn't commit. If you decide to take matters into your hands and break out, you will be free physically but you will make people think you actually did what you were accused of and then you will be on the run and you will have created a bigger mess than it was initially.
But if you wait on God, let him vindicate you, it will work out. It won't be easy. Some times you might fall into despair. Some days you might feel absolutely useless. But keep holding on. Keep holding onto God and stuff you know about him. He is good. He is compassionate. He won't fail you. He will come through.
This verse is true and such an incredible, incredible truth and promise. Cling to it. Wait on God in the midst of your challenges. Wait on God and believe. He will come through. He will come through. He will have the victory!