Understanding mysteries

So I was recently reading in my scriptures Alma 12 and I came across verse 10 which says,"And therefore, he that will harden his heart, the same receiveth the lesser portion of the word; and he that will not harden his heart, to him is given the greater portion of the word, until it is given unto him to know the mysteries of God until he know them in full." It hit me that this verse is talking to members of the church too...sometimes I think that we harden our hearts to certain principles and thus we can not receive the greater portions of the word to that principle. On the flip side there are principles that we accept 100% and we learn mysteries (here is a definition of mystery that I really like: it isn't "something forever beyond your knowing," but "something to be explored." -- from Captivating by John and Stasi Eldredge) some of which are so great that we can't share them with others because they are not ready to understand...and you know that some people might understand, but you aren't sure who would be able to understand.

I wonder how much I limit myself and my learning just because I am unwilling to open my heart to an idea or a concept. I do try to keep an open mind and I love to learn...I am fascinated with other people's beliefs and other religions...and I love learning more about my own religion. I just hope that I can keep my mind and heart open when I am commanded/asked to do something that just doesn't ring true or feel right at first so that I can find out for myself if it is really called of God.