Lol, I can understand that feeling, I also feel that way sometimes, most of the times I just find pretty things I don't really need but they just look pretty in my eyes, that's all, I'm disciplined enough not to buy what I don't actually need, I can only admire them and go about my way.
Meanwhile you said you want to be financially responsible but you are not doing very well? I think that's not true, your ability to just focus on what took you out (your meal) is one of the greatest way to being financially responsible because it means you have discipline and you stick to the plan, that's a good one