@thenewaveragebear1983 So how much do you want/need to lose? I too have dieted my whole adult life but whilst young managed to stay slim.
I, like you, tend to live on the same food. So breakfast is always a sachet of porridge with blueberries (I always use the Quaker sachets because it's measured). Lunch is always fruit, nothing else, so a bowl of orange, apple, few grapes, lots of strawberries and blueberries. Dinner is a huge salad with a medium jacket potato, cottage cheese (instead of butter) and yogurt coleslaw and some meat (atm Aberdeen Angus beef burger or ham). If I have dessert it is more fruit but I try not to and rarely do now. If I'm starving, and lately only if I'm very hungry, I have the smallest bowl of Shreddies and skimmed milk before bed and I go to bed early so I don't do the evening snacking which made me overweight in the first place.
I have no idea how many calories the above is but if I don't have anything else I can lose something (all drinks are "free", Diet Coke, black coffee without sugar and no alcohol at all).
I have 10 fruit/salad a day. I'm not trying to eat 10 particularly but it happens to be 10, as follows:
Blueberries, apple, orange, grapes, strawberries
Lettuce, tomatoes, cucumber, peppers, celery.
I usually manage 13,000 steps or more. That's a long, slow dog walk, a 55 min exercise routine daily and any housework. Sometimes it goes up to 16,000 steps.
I'm just trying to give you an idea of what I do when I actually lose weight. Again, like you, if I deviate from this and do any snacking I can put on 1 lb per DAY! No, it's not fair and it's bloody rigid.
I'm sorry if this is a "me-me" post but I'm letting you know, when I actually do it, what works in my case. Sadly, no extras for me at all.
But someone might come along and say my diet has 2,500 calories because I've never checked how many I eat. The salads are big, the jackets are on the small side and the burger is lean.
I can't imagine this will help much but I just want you to know that often I feel low too and wonder why I bother. Feeling slimmer is why I bother and looking a bit better in clothes but it's hard, truly difficult and near impossible to diet over a long period of time.