It takes a while. A long while. But once you develop a habit, a day will feel empty without your routine exercise, and doing it will feel real good.
The important thing is to find what works for you and do that. I bounced off many gym programs and could not keep up with them. Then I hurt my leg and decided to talk to a physical therapist. He developed a program for me that’s easy to stick to, yet challenging enough.
Not everyone’s into jogging and lifting. Look and ask around. Good luck!