How to get re-motivated?

i have lost 60 pounds in the past 6 months. Since then, i have been getting several complements in which i gained great confidence. Although i am told i look great, i personally am not where i would like to be, and have plans to loose an additional 20lb. unfortunately, last month i had surgery in which i was unable to conduct my daily workouts. After a long recover, the doc finally gave me the go ahead to work out. The problem is, i cant find the motivation or drive that i had in myself while losing the original 60 lbs. Any ideas on how to regain the mind set i once had?