Once Flash Sentry got back to the Crystal Empire from his ride back from the train, he went straight to Princess Cadance, and asked her where Shining Armor was and said that he really needed to talk to him and ask him for advice, Princess Cadance told him to go by the Balcony and wait for a few minutes for Shining Armor to come, so, that's exactly what Flash did, and sure enough, after a few minutes, Shining Armor came out to the balcony to see Flash Sentry.
"Hey Flash, how are things going? Cadance said you needed to talk to me"
"Hey Shining, yeah, the thing is, I need some advice from another fellow guard"
"Well, I am the Captain of the Royal guard, so sure, you can ask away"
"Well, Shining Sir, don't get me wrong, i'm very grateful for the job that I have been given thanks to you, and I do wanna do my best on this field, but I don't know, I guess i'm just beginning to lose.... Motivation.
"I see, i'm listening"
"You see, when I first became a castle guard member, I thought i was going to have a great time doing what I love and enjoy doing best, defending attacks, and protecting castles, I thought that was what it was going to be all about being a castle guard member, but all I've dome so far while having this job, is serve others, watch for any intruders even though we never really get any of them here, and also just doing announcements and introductions for Princesses and other important ponies, which no offense Shining, I don't really find much enjoyment or excitement about, and I keep thinking to myself and questioning myself, is it actually worth worth it to do all of this, cause, I feel a little bit useless and under appreciated at the moment"
"Well Flash, I completely understand where you are coming from, that's what almost every single guard had told me when they first got on their job"
"They did?"
"Absolutely, and yeah, if i'm being honest, being a guard can be a very tiring job that can get extremely boring, and I do sympathize with you, cause there's really not a lot that you can do here or find interesting or adventurous in the Crystal Empire"
"Well, what do you propose? It's not like I can just transfer my work from here to other places"
Shining Armor thought for a while, then suddenly came up with an idea.
"Or maybe you can!"
"Huh? What do you mean?"
"Well, where was the place where you did that brave defense?"
"I believe that was in my old home Canterlot, why do you ask?"
"I'll tell you what, I'll arrange some stuff for you there, and if you want, in one week, I can transfer your work and duties, and have a home set up for you in Canterlot"
Flash Sentry then bursted into excitement and happiness.
"Really? You can do that for me?"
"Really, I know you have the potential to be one of the best guards in all of Equestria, your time to shine, help and sacrifice will eventually come"
Shining Armor then patted on Flash Sentry's back, which Flash turned into a hug, which Shining kindly accepted.
Then, Flash Sentry was skipping along the hallway happily again before entering back into his room, and he laid on his bed, excited that the following week, he was going to be back at his old home Canterlot, back at the place where he made his first defense.