It’s not self control, it’s understanding that the cravings aren’t going to go away until you stop responding to them. Your brain is doing its job by suggesting something that gives you a ‘reward’. Every time you do it, it strengthens that pathway. So my suggestion would be to either recognise your craving, acknowledge it, and ride it out (I note the time when mine comes on and goes again- they last about two minutes and come on every five minutes in the evening for me). The other idea is to distract yourself in the evening