Will power is a finite thing. You can run out of it. That’s why, if you’re trying to give something up, you’ll only give it up for a short period of time if you rely on will power alone.
The thing you’re willing against has a deeper hold than that.
Your will power is a conscious act. The thing you’re willing against is likely an emotional attachment with subconscious roots that’ll take more than discipline to overcome.
That’s why you’ll find yourself having a big bowl of ice cream on a Friday night after resisting biscuits all week.
It’s even harder when you’re trying to give up two things at once, using just will power for both of them.
That’s why you’ll have a glass of wine on an evening after resisting chocolate all day.
If you understand where this habit comes from, what triggers it and what your brain is trying to achieve in pursuing that behaviour, you can put strategies in place to resist those biscuits for good.
You’ll still need will power, but you’ll have a framework to use it within.