Sooooo......we shouldn't be too preoccupied with the future now eh? Instead, we should maybe focus a little bit more on the present? Gee, doesn't this fly in the face of past counselling that we've been given not to be preoccupied with the present day?
[tongue in cheek]
Mary,
I think you are misunderstanding the overall counsel.
In a nutshell, JWs should (1) think about the present, but feel guilty about not considering the past and focusing on the future when they do, (2) think about the past, but feel guilty about not thinking about the present and focusing on the future when they do, and (3) focus intently on the future, but feel guilty about not considering the past and thinking about present when they do.
To sum up, no matter what a JW thinks about there is a Watchtower article somewhere that will call it wrong thinking, and they should feel guilty about it. After all, they aren't just failing themselves, they are failing the Faithful and Discreet Slave, Jesus (whom they can't interact with anyway), Jehovah, the "whole association of brothers" earthwide, and all those who have died faithful.
Good thing Jesus' load is so light, eh?
[removes tongue from cheek]
Respectfully,
AuldSoul