When encouraging the brain to adopt a new belief, it's very important to mindfully collect evidence. You can tell yourself new stories all day long, and this is a good place to start, but in order to really take the exercise all the way, you need to show your brain some proof.
Sounds simple enough, right? Well, there's a few things to take into consideration. Although your brain is always looking for data, without your input, it seeks information that supports what it already believes to be true. If you believe that the world is a terrible place, your brain will notice stories that support this point of view. If you want to believe that life is glorious but part of you kind of believes it's not, you need to be careful or your brain might continue to present the data for the old belief versus the new one.
It turns out, this can be a fairly easy situation to handle, provided you are up for some good old fashioned mindful noticing. And some writing.
In order to incorporate your new belief, write it down. And then write down three pieces of supporting evidence. As with most things, three is the magic number. Do this everyday, and make sure that your three pieces of evidence are always new. This will accomplish two things. One: you will train your brain to look for new evidence. Two: you will amass a large index to support your new belief.
It might seem silly, but it works (and it has the potential to be life-changing).
So, are you ready to make a shift?