My security blanket

I think my filofax, my main daily one (my Malden personal, which I will review soon) is always with me. I usually carry it in my hand, as when I am on campus I have a huge backpack full of books, and I don't want it to get damaged inside my bag. During term-time, I need it with me all the time because I am always so busy, there is always something to write in it.
But during the holidays, I barely need to write anything in it, except for a couple of to-dos per day (I'm not very busy!). Why do I still  carry it with me? Now that I think about it, I barely open it! I usually leave it in my room when I am at home, but when I go out shopping I carry it with me, I put it in my handbag, but that is a problem because my handbag is getting heavy! Do I really NEED it with me when I go shopping? What do I actually use it for when I am out? My shopping/chore list. That's it! So do I need it with me? No! That is what I bought my mini Finchley for! But I think I don't want to leave it at home because there is always the "what if?" situation. What if I need to write something down? What if I need to check something in my diary, or look at something in my reference lists? It's heavy, it's bulky, it takes up half of the space inside my bag! I can write any notes in my Finchley and transfer them later. I could even use my brain to try to remember diary things etc!! But... I feel like I can't be without it!! It's my security blanket!!