Eventually you'll become less sensitive to the Vyvanse. Take it every day to build tolerance to the stimulation. You won't build tolerance to the focus effects, then just increase it to 20mg, 30mg, etc..

My dose is at 40mg. It wakes me up in the morning and helps me focus throughout the day. It doesn't give me motivation but gives me the ability to motivate myself if I want.

Be careful with 10mg. That dose is ok for children but not for adults because you could build reverse tolerance (Low doses are microdosing stimulants which could lead to permanent motivation, focus, energy and overstimulation, sensitivity to coffee). I would increase it to 20mg to prevent that.