First, welcome to 3FC!
I do want to say I second the post from freelancemomma. You have lost weight in the past, so you can lose it again.
It is a struggle and you do need to find what works for you, and what you can stick with.
I calorie count. I cut out sodas. I measure everything I eat! I do not "guess" the portion or try to eyeball it. I drink mostly water.
I made a whole heck of a lot of changes because for years I could not lose weight. I thought I was doing everything I could, but I wasn't. One 20 ounce bottle of soda is more than one serving. Sauces and dips can quickly add a good amount of calories. I used to drench my salads in full cal/full fat dressings.
And don't get me started on my coffee! There was so much cream and sugar in there, I might as well have skipped putting coffee in the cup! LOL!
I suggest that you do the following:
Read through posts on this forum that catch your eye.
Use the search option for specific questions you may have.
Start using a calorie tracking app/program like My Fitness Pal.
Switch to drinking water only.
Measure and/or weigh everything you eat. Log every bite or sip you take.
It is also easy to over estimate the amount of calories you burn. You might "think" you burned 500 calories but have only burned 100....And calorie burn calculations can also be way off.
I have done those things and a few other things and have dropped 42 pounds since January. Just last year I was crying that I couldn't even lose 10 pounds, or 5 for that matter!
Feel free to visit my blog to see some pics of me, my measurement changes (sometimes the scale doesn't move but our body is changing!) and maybe you will find something helpful there as well.
If you join My Fitness Pal add me as a friend there. RavenWolf1977