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.
Detach the anchor of attachment towards collecting wealth and attach your mind in chanting & remembering Lord Krishna.
Hearing is important but practical application is the most important. Then it will be possible to remember the Lord constantly.
Remembrance of Krishna is not possible for the impure soul who has not practiced Krishna consciousness in devotional service. Therefore, one should practice Krishna consciousness from the very beginning of life. If one wants to achieve success at the end of his life, the process of remembering Krishna is essential. Therefore, one should constantly and incessantly chant the Hare Krishna Maha Mantra.
To be Krishna Conscious means to remember Krishna all the time and to be prepared for death all the time.