I'd love to see something like poker snowie expand so that you could give it a scenario and you continually play that scenario. For example, on the challenge mode, you could choose "I want to play a 3bet pot in position BTN v BB" - set it up on challenge snowie and away you go, hand after hand of 3bet pots.

That would be indeed a great tool.

Or set it up so that you continually have SB v BB decisions, that kind of thing.

I've done this some times, vs snowie and vs some friends a couple of times. You just have to play HU with the appropriate preflop ranges, and sometimes use some tricks like for the SB vs BB single raise pots you can play HU vs a friend and the BTN always min raises so that the BB can play as the SB OOP and choose whether or not to open, as it would be in a 6max table.

I have used Snowie a few times for deliberate practice but it's weird playing against the machine as it doesnt adjust, but it should be fine to train GTO strategy. Playing a lot and reviewing specific aspects of your game everyday is close to deliberate practice and it's what I've been doing lately.

These are my daily routines outside of playing-
Estimate range vs range equities: Randomly select 2 positions and pot type (I weight the probabilities by the frequency of the situation). Generate 10 random flops and guess the equity for each player. I keep doing this for 10 situations (100 flops)
Estimate c-betting and defending frequencies: Do the same as above but use pio to find the c-betting frequencies and fold vs c-bet frequencies. This will help you identify low frequency and high frequency c-bet spots. Note I select the flops and the situations before I go to bed so PIO can solve over night. I do both these first steps at the same time as well
Estimate your pre-flop ranges: For every common situation pre flop (and a few uncommon), write out your pre flop range from memory and the compare it to what your range actually is. This is for 2 reasons
(1) So you know your exact pre flop range so you make less mistakes
(2) So you make less mistakes when constructing post flop ranges whilst playing (as your range will be ingrained in your head)

I'm sure there's many other things that can be done, but this is what I do

Some great replies so far!

These are some very great ideas and responses. very helpful everyone. As i find myself a lil all over the place from time to time on what to study and what areas of my game i should work on

+1 to Mitchell Reid for mentioning Power Equilab. PE + Flopzilla is a deadly weapon alongside a HUD.