I kept lots habits fromwhen I was poor

If you were poor, I wonder if you kept some of your habits as middle class now. Say I save water from washing veggies to flush toilet although my irritation system wastes a lot of water; I still use the last bit of ketchup for soup/cooking although food is no longer a luxury and I still at least double use the tissues for kids when again they are no longer luxury etc. Those habits won't save much money if at all but hard to ditch for me. What about you?