Build your toolbox!

Developing complex Applications is something great! Inventing new stuff is great! And reusing it is even better!

Always keep good code / design approaches for reuse!
Abstract it to a limit where it can be reused everywhere!
And if possible, add some "meta tags":
- Where has you used it?
- Why is it so good?
- For what approach could it be used as well?

Give it a try!