The most important thing about an engine is that you have one. Even if it is tiny. Engines start life as buffers. They need to be looked after, and to grow, but the help is reciprocal. You can dip into a buffer. That is why it is there. A buffer takes the edge off as you get into position to have a proper engine. With a buffer, your labour is still the engine. You need to fill up the buffer again. An engine fills itself. Left alone, an engine grows. Even if it is not left alone completely, it will grow if it generates more than is taken out. You should try not dip into the engine, but use what the engine makes. Eventually one day, your engine can give you the financial security to direct your energy towards things that count, but can't be counted.