This requires a very large explanation, which cannot be summarised in this post. You can understand this through Jos and the present Leader's Sermons.
To achieve this, it is necessary to really work on oneself. Some points are:
-Control your mind
-Control your emotions
-Control one's reactions
- Work on your self-confidence
- Meditating and analysing your life with introspection
- Develop your 'Virtues' and maintain them
Each point should be explained further, but it is a long discourse and cannot be addressed here. The Jos has everything you need.