I think that everyone is different and a plan that one person can stick with and follow another may not be successful with it. Hoping that you are giving yourself a reasonable amount of time to lose this weight, and with that being said I can only tell you what has worked for me.
I do Atkins...get the book and read it...keep it with you it will motivate you. Drink the recommeneded amount of water daily. I cut my carbs down to 20 a day and most of those need to come from vegetables. You need to exercise at least 30 minutes a day. If you cut your carbs (that is cutting out rice, bread, most desserts, milk, sodas-unless diet, etc) then that is what works for me. Everyone is different though and there are people that have said they were not successful. It works for me. My weight loss has slowed recently but that is because a lot of junk has happened in the past three weeks and I have not been as strict on the carbs nor getting to the gym. However, I have lost 30+ pounds pretty quickly doing this and not feeling like I am cheating myself.
Start weight 245#
1st goal: 220# - met 04/07/11
2nd goal: 210# - met 05/21/2011
Start over: 221# 11/08/11
Start over: 233.2# 10/2012
Start over goal met: 220# 11/14/2012
Mini goal to be in 212's by Dec - met 12/31/2012
Mini goal: 207's by end of Jan- met 01/31/2013
Mini goal: 197's by end of Feb - met 02/27/2013
re-start grrr Mini goal: 197's by 09/19/2013
I have to restart again as I slipped. I am leaving the above so I can keep track. It happens and I have to keep learning.