Unless you're very small boned, 110 pounds is a bit light for your height, and might be unrealistic to maintain. I'm the same height and can't imagine being 110. But I'm also 52 years old. I have kids older than you.
I have grandkids!
Anyway, what you've tried so far hasn't worked very well, and won't work long term. It's to hard to sustain.
Personally, I'm a Weight Watchers fan. Lifetime member. It's not for everybody but it works for me. Cruise around 3fc and check out the calorie counters and the WW and other threads. Tons of great info and insight.
For myself, I eat on plan, because my plan works for me. Most of the time I stick to my daily points, but WW also has a weekly allowance of extra points you can use for treats, or if you get stuck in a situation where the best choices are not there. So, if I want to have a beer, I can. If I want to have a piece of wedding cake I can. If I get stuck, out working cattle and someone brings out lunch, that's not so great for my plan, I'm ok, just practice portion control. And so on, I just have to work it in. No denial or deprivation here.
I work out, 3-4 times a week for 30-45 minutes. I lift weights, it's what I
like to do, and it helps me with my job at the veterinary hospital.
Weight loss and maintenance, isn't about living your life in denial/deprivation or a life of buckets and hours of sweat, or trying to barf, (ick) but balance! Good tasting, healthy, nutritious food, most of the time. Get in a reasonable amount of exercise that you like, and indulge a bit now and then.
Being able to indulge a bit now and then without the guilt/self flogging, is what keeps me going. And I'm healthy!
My weight is right where I want it, and the weight lifting I love, is the last key to the transformation of a body and mind, that fit this old lady! Best of all, I'm happy!
Let me give you a for instance. We had our big Christmas celebration today. I planned for it. Worked out one extra day this week, saved my weekly points allowance. I had some of all of my favorite Christmas foods. I kept the portions reasonable, and enjoyed, turkey, mashed potatoes, gravy, dressing, green bean casserole, my sisters famous cream cheese corn, and 1/2 slice of pumpkin pie, and 1/2 slice of peanut butter pie, and a few munchies.
Since I don't normally eat that much, or that much salty stuff, I'll be up on the scale for a day or 2, but no worries, I'll take a 5 mile walk tomorrow, stick to my daily points and I'll be fine.
I know I rambled a bit, but I hope it helps direct you to a more healthy lifestyle that you can actually
live with!