Patience - I lost 60 pounds in 6 month. While it would average 2.5 pounds a week sometimes I would go 3 weeks without any loss then the next week I would be down 6. Several weeks I actually gained a little only to lose what I gained and then some the next week. I still don't trust my scale - I do trust my fat calipers now - 75 pounds of the 60 pound loss was fat - I gained 15 pounds of muscle while I was dropping the fat and I think this may have been why my scale would show no loss while I had to punch new holes in my belt. I also used IF during this time and found it very helpful.
"First say to yourself what you would be; and then do what you have to do" - Epictetus