It is hard to start with, but I think when you realise you can do it once, as in one day, and you are prepared to have the flu / cold you can do it. The way I try and do it is to set times, so when I get up I have one hour before my first dose and then I can settle a bit mentally, dont get me wrong the mental and physical for the first few days is hard, but bearable, then if Im getting jumpy I look at the clock and tell mysel “not until 2pm”, I then try and find something to do, whether it be round the house, go for a walk, gardening, online window shopping etc, then it might be 1pm and its easier then as you can see its only an hour to wait and youve done more than that up to that point, it will hurt and be tempting to “cheat” but try stick to your plan, yesterday as I say I stretched to 5pm, purely on the fact that physically I was coping, still hurting, but coping, so I wanted to push myself with the knowledge I’m in my window and I’m “allowing” myself to have some if I want, but I chose to push.
Everyone is different and everyone will have their own preferred way, I think the key is not to cheat yourself, focus on your times / doses and stick to them, when you do it you’re pleased with yourself and I think that then reinforces the will to carry on because you’re getting that positive mental feedback.