Holding a daily debate about whether to train burns half the energy you needed for training.

The arguing is the expensive part. Deciding fresh every day means running the whole case for and against, which costs real attention, so you arrive already worn down by a conversation you have now had hundreds of times. Habits are less about willpower than about closing the question so it stops reopening.

Set the days and the time, then stop reopening the file. When the voice starts up, notice it and go anyway without answering it. Ignored consistently, it gets much quieter within a couple of weeks.