I keep a diary of my different practice routines. That helps me from being bored. Boredom is a big enemy of practice me thinks.
Sample - Monday - large grouping all numbers x 3, 100 darts at bulls and 20's Tuesday- around the board on doubles, 100 darts at Bulls & 20's- doubles 20's,10's, 5's, 16,8,4,2,1 x 5 Wednesday - off, Thursday- sm segment grouping 7 numbers x 5 around board on doubles, 100 darts at Bulls and 20's. Friday- play dartmaster 3 in 01 games and american cricket. 100 darts at treble 19, 18.
These are just examples, I mix them up . usually about two hrs of practice. Also do A-2 flight school 11 numbers example treble 20-15, Bull and doubles 20,10,16,8,
another routine I use is shoot double 20, then bull, double 10 then bull and so on and so forth.
All am saying is mix it up and it helps keep ya focused. I don't compete against myself ! with lots of pb's you know if your throwing well