The requirements of a PHD thesis are difficult and it gives every student a hard time. Regardless of the level of skill they’re at.
When I was pursuing my PHD, I was confident that I had good enough research and writing skills to handle my PHD thesis. I thought I could I could pull it off and I took a chance at it, and guess what? It didn’t turn out the way I wanted it to. Thankfully, I had a plan B in place – which was to outsource my thesis to a cheap thesis writing service in case things went south and as soon as I realized I wasn’t going to be able to succeed, I went for plan B. That is how I saved my thesis.
I believe it is not wise to rely just on your skills if you are pursuing your PHD. You must also have an option to outsource your thesis.