Energy is influenced by choices motivation likes pretending are unrelated.

How much energy you have is determined largely by things motivation prefers to treat as separate. Sleep, food, movement, alcohol, how much you sat, how much daylight you got. When drive is low, the instinct is to look for inspiration, when the input is usually more basic and less interesting.

Before concluding you have lost your motivation, look at the last week’s inputs honestly. Fix the most obvious one for a fortnight and see what returns on its own.