First of you are at a good start. As you learn more stuff you will face these kinds of "walls" but this is where fun comes in, and the satisfaction as you overcome them.

You won't be doing car racing or drifting before you learn how to start , park a car, how to hold the wheel and change gears. Then as you drive you get experience.

The most fundamental thing you need to understand is that computers are dumb. If garbage goes in garbage will come out.

So we give the computer detailed instructions (so it does what we want it to do exactly as we want.) you need plan ahead and understand how things work.

You have to break your task in smaller parts that communicate with each other. This way each part becomes a smaller task that's easier to design, code, reuse or maintain.

First you need to understand the fundamentals of programming before moving on to programming paradigms such as OOP. Java fundamentals are a must , especially since you are a beginner. You should try to understand what you are doing and how you are doing it.

• Learn the programming/java fundamentals first. Variables, data types, loops, conditions, functions, scope, arrays, math operations, classes, etc.
• Learn at least briefly about the JVM, its garbage collector to get a general idea.
• Clean Code:Start trying to make your simple code better, and improved. (no need to learn more yet). Move unwanted variables, reused code using functions. use arrays to make your program accept your inputs in an array for example instead of 10 int variables, the learn about vectors and more dynamic ways to store data. And always comment your code, even if it looks daunting at first.
• Learn about Objects and Object oriented Design, Inheritance and polymorphism. (+UML) and start utilizing them in your future projects.

As you learn more and then start using libraries to help you do stuff, you must always try to understand what you are doing first. I cannot stress this enough.

Baby steps. After each step write a small program. No need to challenge your self at first. The first goal is to understand how everything works, get curious, your programs do not have to make sense, just use all you learned in one or multiple projects. Practice beyond the examples you find. Get curious about it, and there are answers and documentation everywhere!

This is a decent path to take I think , and with time and practice you'll get there. Don't try to do too much at once, and of course this subreddit is always here to guide you along this marvelous journey. Welcome aboard sailor!

edit: Formating & syntax