When I first started my practice about 10 years ago it was suggested to do 90 days straight. Thats what I did, and just kept going. I think I may have done more than a year straight at one point. Only now after having my 1st and only baby at 41 do I not practice 7 days a week. I think the key is to not put too much pressure on yourself. View it as a daily reward. Unless your very underweight you don’t need to worry too much about the food thing, other than not eating too soon before class. Remember, allot of the time its psychological. Constantly remind yourself how strong you are as you practice. Loose any hysteria. It really makes a difference.