The reason you don't know how to solve a problem is because you do not have a solid grasp of what you learned. This will sound harsh but node.js is a horrible beginner choice. you should've learned python, java, php. asynchronous programming is a bit advanced way of doing things, and synchronous, functional programming works best. i've dabbled with OOP, but have rejected it largely because it doesn't work well for most of my projects.

Pick a new language, which will be now easier since you know javascript, create a simple project with it. Once you get to creating something, you will realize, the confidence to solve other problems. You keep going until you are very confident. You can't learn it, you have to use it.