We often want to make overnight changes.
But that won’t work.
Because our body and mind resists change.
So we have to trick our body and mind.
By making the change happen slowly.

For example:

You wake up at 8am and want to wake up at 6am instead?
Setting the alarm clock for 6am will work for a few days, until it doesn’t.

Instead:

Set the alarm for 7:50am (10 mins earlier than usual).

Acclimatise your body and mind to this small change.
Will take 2-3 weeks.
Post that, another small change.

Alarm for 7:40am
Repeat.

Then 7:30am.
Repeat.

Over a period of a few months, you would get to a routine of 6am!