I empathize because it is hard for me at times, too. I'm 5+years out and have had bouts of noncompliance and nice stretches of time when I take them everyday.  

What has helped me:

  - set your phone to give you reminders during the day (if you have a phone with that function). This helps me get into the habit. And/or set up a google calendar alert for different times of the day.

- take certain vitamins during activities that you do every day anyway. One batch when you wake up to go to the bathroom first thing in the am. One when you brush your teeth. One batch by your keys. This helps me a lot. I take iron at 5 or 6 am when I get up -- on an empty tummy & a hour awat from breakfast/ coffee/tea/ dairy. 

- put the vitamins where you can see them. I know it sounds simple but this really helped me. I get so busy that I forget. I keep some right by the coffee mugs-- can't get a mug without reaching past them. Sme by my toothbrush. Some right next to the tv. 

I hope this helps someone!  Good luck :0)