MY HAIR ARE GROWING FOR SURE .....BUT TOO SLOWLY FOR ME

I KNOW THAT EVERYTHING IS ABOUT PERCEPTION BUT I GOT THE IMPRESSION THAT MY HAIR ARE GROWING IN A VERY SLOW PROCESS.
I DON'T KNOW WHY I AM NOT HAPPY WITH MY LENGTH, ESPECIALLY AT MY FRONT SIDES. AT THE LOW  BACK  I CAN SEE  MORE LENGTH DEFINITIVELY.
BUT I WISH IT WAS MORE OBVIOUS. MAYBE I NEED TO START A GOAL LENGTH CHALLENGE LIKE  ON SOME YOUTUBE VIDEOS... I DON'T KNOW. 
 THE ONLY FACTOR THAT I LIKE IS THE THICKNESS DUE TO THE CONSTANT USE OF CASTOR OIL.

1a JUNE 2012 FRONT 

1b MAI 2013 FRONT

2a JUNE 2012 BACK

2b MAY 2013 BACK

3a JUNE 2012 SIDE/BACK

3b MAY 2013 SIDE/BACK

4a APRIL 2012 FRONT

4b MAY 2013 FRONT

5a APRIL  2012 SIDE

5b MAY 2013 SIDE

6a 1 MAY 2012 BRAIDS

6b 2 MAY 2013 BRAIDS

I THINK I WILL TRY A CHALLENGE WITH CASTOR OIL AND VITAMINS BUT I AM NOT SURE BECAUSE I HATE TO TAKE TABLETS  SUPPLEMENTS EVEN FOR VITAMINS BECAUSE IT LOOKS LIKE I AM ON MEDICATION.
 BUT I WILL DEFINITIVELY GO TO YOUTUBE TO CHOOSE THE BEST SUITABLE OPTION FOR ME.