If there is one universal truth of human biology, it is that exercise is good. It is good if you do a bit or a lot, if you are young, old, male, female, trans, pregnant, trying to get pregnant, single, married, divorced, depressed, a smoker, have cancer, have heart disease, have dementia, an astronaut, a pure mathematician, a plumber, tall, short, liberal, conservative etc etc. There isn't anyone that doesn't benefit…
I worry about my health and often I have a really good try and making a habit. But crap is it hard. It's not the money or the time. There's something else about willpower and boredom. I wish I could get on an exercise bike, stare at a brainwashing device, and "wake up" an hour later having remembered none of it.
Podcasts or films or boxsets on the phone/tablet to kill that boredom if you're doing steady state cardio. Maybe immersive games like that Zombie Run game, if jogging is your thing.
Switch it up, do HIIT instead of low impact steady state cardio once in a while. Lift weights.
Find a buddy to go with you. If you're obligated (or enjoy the company) then you'll be more likely to do it - as will they, you'll be helping them out too. Professional options include: join a sports club. Tennis, kickboxing, whatever works for you. Or get a personal trainer, if you can afford it. 99% of their value is that they simply make you turn up.
Cycle/walk/jog commute if possible. If you can fit exercise into your existing routine it's far easier to keep doing it.
Best of luck!