For me the key was having accountability to GET there and get my work-out in...
I did this by teaching aerobics on my lunch break for years-- i HAD to be there cuz i taught the class! and it was fun, and i had relationship with others who were coming etc.
In this way, i formed the habit.
Now, tho' i occasionally still teach, mostly i'm on my own, but because i formed the habit, i still get my work-out in on my own. If i don't exercize two days running, LOOK OUT! You do NOT wanna be around me..
I am literally addicted to exercize... could be worse; it could be cocaine or alcohol.
For me, it's all about the exercize..... (which motivates me to eat properly.)
kdn