[maigret]

Have you tried to cut coffee and take tea instead? Cutting alcohol in the week may also help you sleeping better. Doing a small jogging also helps losing some energy and can facilitate sleep.

Concerning your point, from your comment it seems like you are still young. At some point, you'll have to find a more sustainable pace. Most engineers I know have a family to support, like to do their job well, and thus need to have an overall good life hygiene.