You should try writing comments BEFORE you write any code. eg
public string getCurrentUserName() {
//init user database repository
//retrieve logged in user
//return name if a user is logged in, otherwise return null
}
Writing comments before you code, helps you learn how to structure your code without actually coding it and realising that you should have done it another way. It's also a good way to quickly visualise a clean solution to a complex problem without getting bogged down in implementation. It's also good because if you get interrupted, when you come back to your work you can go straight back to it, as opposed to refigure out what you have done and what you need to do next.
Not suited to all situations, but often a good option!
