checks and balances

how much time should i allow myself to relax? i think as much time as i want as long as it's still relaxing. if i'm sitting around and thinking about things i should be doing and want to be doing then i'm not relaxing, so then i know it's time to be working. and vice versa. when i'm working i want to be productive. and i will be productive till i start thinking about needing to relax.