Here is a good tips on how to analyse on your own games. This is from a book called Chess training for Budding Champions by Jesper Hall,
A scheme fo analysing your games
* Identify the critical moments.
* Think of the reasons for the mistakes.
* try to find new possibilities and spot new critical moments.
* Draw your conclusions from the points above, so that you will not make the same mistake again in the future.
* If you realize that your knowledge of chess has defects, think of what you can do about it.
* Put some extra time into the opening.
* Do not use the computer until you have analysed the position thoroughly unaided.
To analyse is an important opportunity to practise. At the board you are not allowed to have a computer, so do not get used to having it as your partner at home.
Common mistakes in analysis.
* You do not have the motivation to work at the position until there left to be unsure about.
* You justify your play and miss the possibilities that your opponent has to put up better resistance.
* You leave out unclear variations that you are not sure about when you annotate the game or show it to your friends, as you want to show off.
* You try to steer the anaylsis to make the result logical and therefore you miss possibilities.
Here is the link to ilikesforrests's forum about how many peoples have many different way of thinking during the game.
http://www.chess.com/forum/view/general/your-tactical-thought-process