Think about what it's going to be like during weight maintenance. Will you be able to go for that walk when your weight goes up 0.8 pounds then? Will you continue to deprive yourself of everything to keep the weight off?
Because your weight maintenance is going to look very, very much like your weight loss. That's why having sustainable behaviors now matters
so much. If you hate what you're doing at this point, then you need to change it! It's normal to be frustrated, but I noticed something about what you wrote: they're all negatives. Maybe you could focus on things that aren't restrictions (e.g. have veggies with each meal, or drink a certain amount of water each day, or try a new physical activity once a week). Add on new goals slowly, once they've become habits, and it's probably not going to suck as bad.
No, it's not going to be as fast as restricting from the get go. But this doesn't have to be a sprint. It DOES have to be something you can live with.