Hey Serena -
Some of our members have similarly had success weighing in once per month...it is easy to get caught up on the ups and downs of the scale. I hope it works well for you!
We have LOTS in the way of motivation, whether it is participating in a challenge (like any of the ones in our Chicks up for a Challenge forum) or checking in with any number of support groups (by age, by plan, or something else in the "Miscellaneous Clubs" forum).
Wherever you end up, just stick with it and keep posting. I hope to see lots more of you in the future!