I agree with it being hard to come back after a long lapse. When I did this the first time I had 3 shortish planned lapses, a holiday, Christmas and my neice's wedding. I came back on fine until the last one. I think it was because I still had something to work for until then, ie my niece's wedding. After that there was no special occasion to work towards so it became very hard to stick to it. I didn't put it all back on, but it is tough trying to get back to where I was. This time I am once more having 3 planned lapses, my birthday, a revision weekend and Christmas. I think though to avoid the feeling that I can give up because Christmas is over I am going to plan a cruise for Easter. That way I will still have a medium term goal to work towards so shouldn't relax too much.