Once you really focus your efforts on one method and stop jumping from one thing to another, you will soon start to see results. And once you see results, motivation will take over from there and you will just keep going. The problem for most people is that they give up usually right before they see results. They work for a few weeks or months, they don’t see results, they give up and go for another method. They repeat this with any method the come across, and never make any decent money.
Now, unfortunately, there are a lot of scams when it comes to GPT sites. So it’s best to stick with well known, trusted sites that have been around for a while. You don’t want to complete offers for a month then when it’s time to cash out your earning find out that the site no longer exist. Trust me, I have seen a lot of “here today, gone tomorrow” rewards sites.