How do I study without someone's help?

I have a bit of a tricky situation. From elementary school all the way through high school, I always studied with a private tutor by my side—someone to assist me or re-explain the material covered in class; we would review the topics and do practice exercises together. It worked really well, and I passed my subjects without much trouble. In fact, I actually did quite well in college—relatively speaking—without needing anyone's help.

But now that I’ve graduated and need to pass a crucial exam for my career, I realize I don't know how to study without that external support I relied on for nearly 11 years. I had to buy a prep course to cover the material, but the information just isn't sinking in. I can't stick to the study schedules or manage active study techniques. What’s my problem? How do I make this shift? Should I look for a private tutor again to help me study?

I feel embarrassed to share this story, but it’s reached a point where I can’t go on like this.