My gut instinct is to caution you against using intermittent extrinsic motivators heavily. Some self determination theory researchers-- such as Deci-- find prior reliance on extrinsic motivators causes a marked decline in intrinsic motivation when the same task is later performed without external rewards.
Personally, I would try to be seen modeling intrinsic motivation wherever possible. This could involve openly voicing the importance of a behavior as you do it to reinforce the unspoken message. That way, through introjection, the underlying character attribute behind the behavior is internalized as a part of the child's--or adult's!-- identity.
Indeed-- and further, some of the more interesting further research into intrinsic versus extrinsic motivation finds that tying EXtrinsic motivational strategies to intrinsically rewarding tasks actually
robs them of their intrinsically motivational value.That's a very sobering reason to be wary of sticker charts and treats for tasks that children enjoy doing.
