You will reap or harvest wheat if you sow or plant wheat. The metaphor is used to emphasize that your actions have repercussions. It might be beneficial (if you sow kindness, you will reap goodwill; if you sow friendship, you will reap friends). Or it might be detrimental (if you sow violence, you will reap destruction). No matter what you sow, you will reap something. Sowing means you can give rise to something new by your actions. For example, if you plant a tree, that's sowing. You can also sow seeds, which produces more trees or other plants. If you play the guitar, that's sowing too. You can also seed ideas into people's minds, such as when someone tells a joke or says something funny. People like to laugh so they might not even realize they are sowing ideas in others' minds. Reaping means you can collect the results of your actions. For example, if you reap wheat, you collected the results of your planting activity. You can also reap seeds, which produces more trees or other plants. If you play the guitar, that's reaping too. You can also reap inspiration, which produces more ideas or inventions. Inevitably, reaping what you sow leads to another cycle of sowing new things. So, yes, you can reap what you sow and be positive about it.