Morning can borrow energy it has not earned. Coffee helps. Hope helps. By mid-afternoon, the body tends to tell a clearer story.
The afternoon question is simple: do you still feel like yourself, or are you running on fumes and negotiation? Neither answer is a character review. Both are data.
Energy is rarely one lever. Sleep, meal timing, movement, stress, and the pace of the day sit in the same room. Changing only one thing can help. Pretending the others do not matter usually does not.
If 3 p.m. is consistently hard, notice the pattern before you invent a personality flaw. Track a week without turning it into a contest. Then decide what is worth adjusting — and what belongs in a conversation with a clinician.