No obstacle in life will ever pose an impediment and nothing will ever stand in their way. But those who even while alive indulge in the pursuit of an afterlife, preparing for it, debating it, will have already relinquished the struggle and remain ever so slightly dead even while they are alive. To be sure, there must be some preparation for death. But it must be of the most minimal nature as one prepares for other unlikely contingencies. There is, however, one important caveat to the above, and it is this.
Man is a hybrid between the earthly and the heavenly, body and spirit, substance and form.
The heavenly represents everything which is lasting and eternal, while the earthly incorporates all that is ephemeral and transient. It is therefore essential that we always remain firmly and overtly to attached to the G-d of life if we are to be the people of life.