Don't give in for what you want now, for what you really want.

"If you give in once, you'll give in twice" -Sir Alex Ferguson

Giving in once, will lead to giving in again... sooner than later.

The reason for this is that, first, you tell your brain that it's ok to give in.

Second, you're going to realize that giving in once isn't THAT big of deal, and nothing really happened.

But... The more you give in, the more you give in.

Just like an itch, the more you itch the more you scratch, the more you itch.

The trick is, make a plan to have those moments where built in. Plan for the cheat meal, the drinks on the weekend, whatever it is that you want to do, just plan for it.