I did this as part of my CBT - and making the effort did wonders. It started out difficult I admit. frankly I thought the whole idea pointless. There is a reason for this 'madness' though. The next step will be to learn what kinds of (10) Automatic Thought types there are, and assign what you have been thinking accordingly. Finally, the work becomes about 'what are the alternate thoughts?' I can be having to these situations and examples. It IS difficult, repetitive work that on the outset seems pretty silly. Just know though there is a reason to do this which will all eventually come apparent to you.

The idea is to retrain yourself to think the alternate thoughts.

I'm not sure what I can say to encourage you to keep up with the homework assignments (there will be more). It helped me to set aside time each day to complete them. By the way, my program was completed months ago - and I continue to do the work.