How addictive? I have only been given 14 tablets.
Don't worry too much your doc will keep it in check you're on a two weekly prescription I had the same for a long time.
Personally I don't see the addictive side of it it was never a problem for me use it as a tool sleep and rest and I know this next bit will be hard and you won't always do it but when you wake up and feel awake no matter the time get up. Just get up. Make the bed if you can this is a great step it's motivating and if the day is **** least you come back to a made bed.
Then do something physical and self maintaining, brush your teeth, shower, do 20 press ups or squats or say something positive in a mirror just ritualise something and do it.
As pointless as it all sounds it helps.
For the sleep stress one thing I've found is count. Try and uninterrupted count in your head it serves two purposes 1 it lengthens time if you're counting seconds a miniute is an age.
2 it slows thoughts down its almost impossible for you're internal monologue to continue if you actively count. You only have one inside your head voice.
You'll fail like every 20-60 seconds I never get above 90 tbh but it helps so much but breaking things down.
I have been on 15mg most of the years but have been put up to 30mg for shorter periods. They'll possibly drop it back to 15mg when you're comfortable doing so. The lower doses are supposed to have a more sedating effect. 
