While Dr Clay's book has some thoughts on reframing, I find that CBT and especially something along the lines of the common cognitive distortions can help immensely. It is best if you have someone aware of misstatements, to help call you on any erroneous (self)talking.

But basically, look for blatant statements. "I am bipolar," rather than, "I have bipolar disorder." While it might not look different to you on the surface, because of the way the brain works, there is a big difference resulting in feeling differently.

Be aware of "always" and "never" statements. FEW things are really in those categories.

When you make a statement that tells of your upset, review it. If it's something like, "I can't take this anymore," that should scream time for reframing to you. I think, once focus it made, you can think differently. TC!