First and foremost we must ensure that all of our actions have no subtle selfish intentions and one must be very clever in order to achieve this most difficult thing – the only way is to always remember this concept and never forget even for a moment – the moment you stop thinking about it… Furthermore a person should be careful to go to Mikvah and have the proper meditations – and the final link in this unbreakable chain is to ensure that you are not sad and to be joyful in your service of God.