Sometimes, when you are too tired, it’s better to let your mind to take a break instead of continuously working. You are going to overly drain your energy. Moreover, you are not productive as there is limited creative ideas.
Once you take a break, perhaps a quiet nature walk, sit quietly, a deep sleep and others, creative ideas, solutions come out naturally, like a well, full of water! You are able to resolve all your challenges.
Always remember to take a break in order to walk further. Work smart and remember to spend a few minutes in an hour for just taking a few mindful breath. I love to do simple exercise to reduce tiredness for spending too much time in front of laptop.