Or use your phone...whatever floats your boat. But as responsible adults, it's important to keep our schedules in order. Some weeks can be super hectic or some can be completely blank. However though, I find that the weeks that are mostly "blank" are the weeks that I will forget about an appointment if I don't have it written down. It's good for your memory to actually mark something on your calendar, and it will make you more accountable!
2. Check your agenda daily.
Even if you know you don't have anything planned for today, check it. What if you made an appointment with someone months ago and that appointment is today and you forgot? Yeah, that's happened before...oops! It's also so important to check it all the time when you're in school. By looking at it all the time, it will remind you what projects and tests you have coming up. The more you look at it, the guiltier you'll feel about procrastinating.
3. Stay consistent.
This may sound dumb, but it helps. Keep a certain format for how you jot down your appointments. I personally like to do "Event name - Time of Event @ Location." This way if I'm missing a piece of the puzzle I know I have to contact that person to clarify the details. Also, when you do have all the info in there and you're going to a new place, you'll know exactly where you need to be and there will be no if, ands, or buts about when you need to be there. Plus how fun is color coordinating? I don't do that anymore because it's not very logical for me to carry around 10 different color pens, but you can bet I was all over that when I was in school and had to separate classes, sorority events, university events, and work!
4. Have it with you 24/7.
Ok this is a little bit of an exaggeration, but have it with you as much as possible. There will be so many times where I will be going somewhere and be like shoot what was the address!? If I don't have my nifty little agenda with me then I have to dig through emails or Facebook notifications and that is about the last thing I want to do with my life when I'm driving and the light just turned green.
5. Use it for everything & anything.
You don't just have to use an agenda for appointments. They are meant to help you keep your life together. Make to do lists, write down birthdays, friends' addresses, bucket lists, etc. In my precious little keeper that you can see above, I use the day by day calendar for my daily appointments, but I use the full calendar pages to plan out my half marathon training. That way I'm not bogging up the day to day pages with workouts and vice versa. I also have some awesome tabs in the back to write down restaurants I'd like to visit, a to do list, and an address book. Nice and fancy, huh? I suggest you invest ;)