Hearing is important but practical application is the most important. Then it will be possible to remember the Lord constantly.
Detach the anchor of attachment towards collecting wealth and attach your mind in chanting & remembering Lord Krishna.
If one doesn't practice remembering Krishna while one is struggling for existence, then it will not be possible for one to remember Krishna at the time of death.
To be Krishna Conscious means to remember Krishna all the time and to be prepared for death all the time.
Life should be moulded in such a way so that we can be able to remember the Lord constantly.