@BIWI I wish I loved running. I've tried, but I just don't like it. I never get the so-called 'runner's high'.
So find the thing you do enjoy. I find running boring and tough on the knees. I get that some people genuinely enjoy it but I think that maybe because I don't have runners physique, it's not something I'll ever really enjoy. Now that I'm fit I quite enjoy a quick sprint for a bus or like that I can run down my silly dog if he escapes the garden and tries to run off and bark at his neighbouring enemy dog. But I'd never choose to run a 10km, my knees wouldn't thank me for it.
But last year I found skating. Took my DS to the roller-rink a few times and once he learned to skate by himself I discovered how much I enjoy it and it's become a complete addiction. Rollerskating, park skating on ramps, inline skating outside, ice-skating at Christmas. I can dance on skates, figure skate at just above a beginner level, manage a few jumps, skate 50km+ outside and enjoy every bloody minute of if. I got extremely fit from skating alone, but as I get more ambitious in what I want to achieve on skates, I've added gymnastics, strength and flexibility. Because I want to be able incorporate cartwheels, handstands and splits into my skating.
I never, ever, ever force myself to skate. I itch to do it. Every morning when I wake up one of the first things I think about is skating. Will I be doing it that day, if so how many hours of non-skating do I have to get through until I have wheels on my feet. If I'm not skating that day I genuinely feel so disappointed. I love what skating has done to my body and the way I view myself. But to be totally honest, even if it was really, really bad for me I'd still do it. In fact, when I was sick for months this year, I suspect that skating a couple of times before I was ready to set me back. And I had to be really, really strict with myself a few times to not skate even when I felt up to it so I could recover fully.
So I'd encourage everyone to try and figure out what their 'thing' is. Something in the back of your mind that you always wanted to do. A fantasy about a sport you never really had a chance to try as a kid. Figure out what it is and go for it. It might not be too late to get pretty good at something you might get to love for the next 20-40-50 years.