To help you stay on a diet or healthy eating plan, tell your friends and family. By not keeping it a secret you will feel accountable every time someone asks how the diet is going. Sometimes this extra little push is enough to help you stay on a diet during a rough patch.
For some people, focusing on the weight part of weight loss is discouraging. But you don't have to go about it that way. If you want to lose weight without looking at a scale, select a particular size of clothing to measure your progress. Saying that you "want to be a size x or xx again" will give you motivation. Also, looking at clothes in those sizes and visualizing yourself wearing them - will help you toward your goal.
For someone who is looking for an alternative way to lose weight that they have probably not used before steam can be a good choice. A stay in a sauna or steam bath can cause one to lose water weight that could accumulate. Also it will have the added benefit of cleaning out ones pores.