I had the amazing opportunity to go to the MTC and volunteer with TRC.  Returning to the MTC after two years definitely brought it's own spiritual experiences and lots of memories and feelings. I was taught by several missionaries and received a lot of inspiration and revelation that I need in my life.
Something particular stuck out to me in a lesson we had with the elders. As I read and pondered this verse, my mind was enlightened. The verse read,
"Now, we will compare the word unto a seed. Now, if ye give place, that a seed may be planted in your heart, behold, if it be a true seed, or a good seed, if ye do not cast it out by your unbelief, that ye will resist the Spirit of the Lord, behold, it will begin to swell within your breasts; and when you feel these swelling motions, ye will begin to say within yourselves - It must needs be that this is a good seed, or that the word is good, for it beginneth to enlarge my soul; yea, it beginneth to enlighten my understanding, yea, it beginneth to be delicious to me" (Alma 32:28).
This is a classic scripture that I have read dozens of times if not hundreds. However, something was different about reading it this time. I realized that not only do we have to exercise faith in God and believe in Him, but we can apply this principle to other things. If something feels right, and if it begins to enlighten our understanding and enlarge our minds, it is from God and is a good "seed" or thing. As it seems in every aspect of our lives, we can apply this principle. God will help us to know if something is the right thing to do. Even if it's wrong, He will tell us and notify us in some way. That's the great part about the Plan of Happiness is that we have agency to choose between right and wrong. Our conscience helps us to know what is right and wrong, and then it is up to us to choose the right or the wrong.
As we put our faith in God and Jesus Christ throughout everything we do in life, we will be able to feel the true joy that the light of the gospel brings. When we live righteously we can be more in tune with the Spirit and can distinguish between our thoughts and the quiet whisperings of the Spirit.