I have.
It took a while though and initially I put on weight. I am taking Olanzapine for severe PTSD. It is an antipsychotic and is known to cause pretty horrendous weight gain. My GP was actually worried about it enough that he raised it with me before I started taking it, but I was so unwell that I didn’t really care. A few months and several KGs later when I was starting to feel better I started caring.
If you can afford it - book a block of sessions with a personal trainer in your area, or outside your area. I purposefully chose one that works outdoors so I was getting the benefit of being outdoors and also so I didn’t have to pay for expensive gym membership. I asked to focus on becoming confident at jogging / running and also exercises that I could do myself and carry on with it by myself - I just needed the kick start to get going.
I joined a local (women’s) running club which runs two or three times a week.
I started to eat off smaller plates and bowls - and I also completely changed my diet so that it included lots of fresh berries, green vegetables, smoothies and nuts. I drank more water (I have a pint as soon as I wake up), and I gradually cut out all processed foods and foods that had added sugar in them. I eat now mostly fresh fruit, vegetables and good quality meat.
I quit alcohol and smoking.
Also, I use the free stuff I see offered - like our local crossfit gym has a free week offer going on at the moment so I’ve booked to go and do four sessions with them next week.
I try to walk in the evenings to unwind, which helps me fall asleep easier as well. Apparently stress and lack of sleep interfere with weight loss.
I’m losing about a kg a week, and now I am in a routine it’s much easier to stick to. It was quite hard to find something that worked for me. Good luck!