Your everyday accounting routines are essentially driven from your locally accepted accounting policies. Your local accounting policies lay the framework on which you base your reporting, your policy choices and how things ought to be. 
Then comes the real life into the equation. You will have your transactions, your types of suppliers, types of customers, tax implications and so on. This sets out the other end from where you start moving towards the framework on how things ought to be.
Whilst moving towards the framework you come up with routines that help you along the way. The routines involve methods of receipt of documents, methods for storing those documents, methods for marking and referencing them. The routines also include timeframes on when you’d account for certain types of transactions, when you take certain data from reports and so on.
It’s not just about doing them, but also knowing what and when should be done. Doing itself may or may not be easy, but with so many various activities there’s a possibility that you may forget certain activities and then this whole house of cards may fall into pieces.