how do I code RTS game?

ok so I want to code my own RTS game like Starcraft or AoE or some other ancient 2D RTS.

I know C/C++ (although I suck at understanding OOP so I will basically just code it in C).  And I have a lot of coding experience at making random shit but have never successfully finished a decent project (mostly from lack of patience but also I suck at structuring my programs correctly so they eventually become hard to manage).

So, how do I learned to stop sucking and figure out how to code something like this properly?

>>1
OK, you've picked one of the hardest genres to start off with if you're unfamiliar with OOP. You really want to learn C++(also how to program from the sound of things) for this project and I mean learn well, while you can code the entire game in C you'll have a hard time. Also, you're going to need to understand OOP, and embrace it.

You don't have any programming experience, never completing a project is like saying "I have lots of sexual experience by getting to second base, then I lose interest as the girl gets too hard to manage". You need to complete entire projects!