To deal with this, consider trying other eating approproaches as well as stress relieving techniques like EFT. It is likely that this won't occur as frequently or at all if we eat foods which our body utilizes effectively and have lower stress levels.
For some people this can mean eating more nutrient rich foods, such as the foods David Wolfe promotes in his Superfoods book. These foods often contain high quality protein and other factors, such as minerals, which can work to promote balance verses instability. These are not very calorically dense, however, they provide a lot of minerals etc. which might be what you need to keep going for longer periods of time. David Wolfe suggests sea vegetables, because of their mineral content, for reducing hypoglycemia or low blood sugar issues.
For some people, eating carb rich foods such as fruit might be just what they need to move out of a low energy state quickly. It just depends on how well you respond to it. If that doesn't work, you might work better on long term energy sources like fats or proteins from high quality sources. Avocados and coconut, for some people, might be a great fat source to give them longer term energy and stable blood sugar levels throughout the day. This, however, might not work at all for others. Therefore, it is important to find what works for you and your overall metabolism.