There are many ways. The first and foremost way is to learn a skill and become good at it. Then, use that experience on repeat to help others and get paid for it.
Another way is to get a good education in a profession that you're truly passionate about and enjoy earning from working in it. You'll rise through the ranks and get paid a high salary along the way.
Finally, you can do what I did, become an Entrepreneur and start a small business that solves issues for clients and becomes in high demand.
No matter what you pursue, make sure you're enjoying it, that's the true secret to retaining the money you're making and balancing life!