I used to do 8+ but recently I find myself doing 4-5 at most. Maybe I'm burnt out after 10 years at the same job (I quit a few months ago but still I am nowhere

I used to do 8+ but recently I find myself doing 4-5 at most. Maybe I'm burnt out after 10 years at the same job (I quit a few months ago but still I am nowhere as productive as I used to be). I also find it very hard to reach the feeling of flow without being distracted.