Answer:
We make it complicated
Step-by-step explanation:
We human beings are born into a world where we are taught the basic things about life, like air and water. The meaning is that when we make easy and simple decisions on things (decisions that favor like playing video games and watching videos), those decisions lead to hard and painful results. We act based on our knowledge of the way things are. If we think life is complicated, we will find a complicated and hard way to act. So is Vice Versa, if we think life is simple, we will act in a simple manner. That is the true meaning of this quote.
Hoped this helps :D