[yen223]

I was in your exact position a few years ago.

The problem here seems to be that you're relatively new to Unix. The trick is to be humble. Don't work with Boxen, ZSH, vagrant, or any of those exotic tools. They won't make sense until you roughly understand the *nix model.

Instead, start with the basics. As in start from scratch. Teach yourself to use OSX the same way you might teach your mother to use a PC. You absolutely need to grasp the basics before you can progress.

After that, work on your command-line fu. Force yourself to use the terminal for all the simple stuff. Learn to write simple Bash scripts.

Then, pick a language and try developing scripts with it. Use your new-found command-line skills to set up your development environment. I personally chose Python - it's really newbie-friendly.

After that, it's just a matter of practice. Trust me, you will get there eventually :)