getting back into the work out scene

hi! need a little help here. i used to be a very active person, even through college, but lately with long hours at the office and a million other excuses i've fallen away from strict workout regiment. i've been telling myself i need to get back into it for what seems like forever now, but just haven't been able to motivate myself.
but i was wondering if anyone out there had any of their own tips or success stories. thanks!