Alright, so let's see if I can convey my thoughts coherently, the rules say "If she has both hands free, as a move action, a kineticist can visibly gather energy or elemental matter around her, allowing her to reduce the total burn cost of a wild talent used in the same round by 1 point (to a minimum of 0 points)."
Now force ward is described as a wild talent, and "By accepting 1 point of burn, you can increase the strength of your force ward by a number of temporary hit points equal to..."
Does this mean that a kineticist can indefinitely increase their temp. hp?
No. Check out the first post in the General Kineticist thread.
The gather energy move action thing only applies to blasts.