Stonespirit.....I did something similar. I got down to a very low weight here and then, life happened and I gained it all back (well, 10 lbs. away from all back).
The good thing is that you're not starting from square one because now, you have a lot of information about what it takes to lose and also what stopped you from reaching and meeting and maintaining your goals. Knowledge is power and you are empowered (hopefully, you can feel that way because that will go a long way).
This place is so great and I hope you will find it motivating and inspirational as I have. I can't wait to hear of your progress and of you getting back to feeling as great as you did before.