Reply #4: Practice the following:

[laconicsax]

All chords (major and minor) in all inversions, and arpeggios (major and minor) up and down the instrument.
All scales, major and minor (all three), ascending and descending.
All scales in broken 3rds, 4ths, 5ths, and 6ths. (Instead of going 1-2-3-4-5-6-7-8, go 1-3-2-4-3-5-4-6, etc. for 3rds, 1-4-2-5-3-6-4-7, etc for 4ths, 1-5-2-6-3-7-4-8-5-9(2), etc for 5ths, and 1-6-2-7-3-8-4-9, etc for 6ths) Ascending and descending.

Go through keys in these root motion sequences: Down a perfect 5th (A-D-G-C, etc), up and down chromatically, up and down by whole step (C-D-E-F#-G#-Bb-C, then repeat up a half step), up by minor 3rd (G-Bb-C#-E-G then down a 5th and repeat on C-Eb-A-F#-C and F-Ab-B-D-F)

Spend 30 minutes a day working through this and in a couple weeks, you'll be a formidable player. Sometimes it also helps to have it all written out.

Also find a private teacher, they can usually make the difference between a mediocre player and a good player.