"Wanting to diet" is one thing, but believing that your current eating habits aren't working is another. It's pretty clear to see that the person who "wants to diet" isn't going to get anywhere. On the other hand, the person who earnestly believes that their current eating habits aren't working likely will see success. To actually reprogram your brain, you have to honestly believe that negative thoughts and habits hold no value to you. When you believe this, better actions will follow. You probably know that negative thoughts lead to negative actions and negative patterns. They cloud the silver lining of life, and just seem to cultivate unhappiness. It shouldn't be hard to see they have no value, right? Where do they get you? Where do they get any of us? Your brain is plastic and totally moldable. That's a fact. Neuroplasticity, or brain plasticity is the term for your brain changing as it has new experiences and new thoughts. In short, your brain is like a computer.  It takes information in and uses it.  You believe in the power of your computer, so you should believe in the power of your brain, too. Another good reason to think of your brain as a computer is because it helps you see that any number of outcomes are possible at any given time. You input some information into your brain (like you would a computer), it sorts through it (like a computer does), and it comes out with a solution (like a computer). However, if you change the way you sort the information or how the information comes in or even what information comes in, you'll get a different result – just like a computer. Think outside of the box and you may come up with a completely different operating system. One that is way better than the previous system you were running on! This goes hand in hand with the idea that negative thoughts hold no value. Your mind has to be in the right place for your brain to start changing, or being reprogrammed. After all, "I want to lose weight" and "I believe I can lose weight" are two totally different thoughts....

How would you rephrase that briefly using Indonesian?
Sadarilah bahwa pikiran-pikiran negatif sama sekali tidak berharga. Bayangkan otak Anda seperti sebuah komputer. Yakinlah bahwa Anda bisa melihat perubahan sebagai sesuatu pasti yang bisa terjadi tanpa keraguan sedikit pun. Tantanglah setiap pikiran yang muncul di kepala Anda. Gunakan aplikasi untuk melakukan pemrograman ulang.