make your own excercises. the ones that seem to work the best are the chromatic string excercises, where you go

alternate pick this:

[FONT=Lucida Console]e|----------------------------------------1-2-3-4------------------------------------------------|
b|--------------------------------1-2-3-4---------4/9-8-7-6-------------------------------------|
g|------------------------1-2-3-4----------------------------9-8-7-6----------------------------|
d|----------------1-2-3-4--------------------------------------------9-8-7-6--------------------|
a|--------1-2-3-4-------------------------------------------------------------6\4-3-2-1---------|
e|1-2-3-4--------------------------------------------------------------------------------4-3-2-1|

what i usually do is learn a good song that plays one note at a time and play it over and over

if that sounds too dull for you, here's an alternative:


---------------------------------------12-13-15---
-----------------------------12-13-15-------------
----------------------12-14-----------------------
------------12-14-15------------------------------
--12-14-15----------------------------------------
---------------------------------------------------


--------------------------------------------------------------------14-15-17-
----------------------------------------------------------12-14-15-----------
------------------------------------------------11-13-14---------------------
--------------11-----------11-12-14-11-12-14--------------------------------
-12-11-12-14----11-12-14----------------------------------------------------
------------------------------------------------------------------------------
[/FONT]