Don't allow yourself to become distracted from flying the aircraft, and the chances are you won't stall... And then of course, you are far less likely to spin!
....I often wonder, but I would not be surprised if 99% of stalling accidents that do or do not lead to spins are as a result of pilots allowing themselves to become distracted. If you are paying the aircraft the amount of attention that it rightly deserves, then you'll know whether it's happy.
I guess there would be more value in teaching pilots to *instinctively* fly away from potentially stall like conditions, rather than concentrating wholly on wrestling the thing back to controlled flight after the mistake has been made.
For basic PPL kind of flying, there really is no excuse for stalling unintentionally:
Don't be distracted
Feel the aircraft
Listen to the aircraft
Be gentle with it
Look at the ASI
Dont turn final at 300' with 20 flap @ 45 KTS!
Nish