No. Most of what holds people back doesn't seem to be 'psychological'. If you ask people who try cycling and give up, the overwhelming reason appears to be the stress of near misses (this is anecdotal, but there's some formal research ongoing). One can prevent some of these through assertive riding, but one can't control really aggressive drivers, or the incompetent, or inattentive. Cycle training can help somewhat, but in general, the busier the road, the less use it is (because cyclists will encounter higher numbers of vehicles, and more aggressive/incompetent/inattentive drivers - and those drivers will be paying more attention to the motor traffic than to cyclists..).
No. Most of what holds people back doesn't seem to be 'psychological'. If you ask people who try cycling and give up, the overwhelming reason appears to be the stress of near misses (this is anecdotal, but there's some formal research ongoing). One can prevent some of these through assertive riding, but one can't control really aggressive drivers, or the incompetent, or inattentive. Cycle training can help somewhat, but in general, the busier the road, the less use it is (because cyclists will encounter higher numbers of vehicles, and more aggressive/incompetent/inattentive drivers - and those drivers will be paying more attention to the motor traffic than to cyclists..).