Include Church activities. Take pictures after seminary or at young women's camp. Take a photo of your priesthood quorum or Young Women class once a year and give everyone a copy. Years from now you'll be able to see who your leaders were and what your friends looked like way back when.
Go on a hunt. Go on a picture scavenger hunt. See if you can photograph your family's favorite spots around your home and neighborhood.
Capture the norm. Want to liven up a regular day? Take a camera along and get shots of some of these things: Your bedroom, your car, your school, your favorite pair of shoes, your pet, the view out your window, your classroom, who you eat lunch with, afterschool activities, your church class, and anything else you encounter in a normal day.
Say cheese. Ask your parents if you can try to take family pictures every year. This is a great opportunity to get the whole family together and look back and see what everyone looked like growing up.
Take a vacation from vacation. Pictures aren't just for trips. Take pictures of your family at home. Maybe you love seeing your family sitting together around the kitchen table, or you like to see your siblings playing outside. Take a picture of these things so you'll always remember them.
Remember that time. Try recreating some of your favorite pictures. Go on that hike again, or revisit that same spot downtown and take the picture again. You will make new memories while remembering old ones.
Be sure to print out and keep all your picture memories in a safe place like a box or an album, and label them with the place, the date, and the names of the people in the picture.