Focus Trouble

Throughout this entire landscape project I have noticed along with Ms, Morell, that I have trouble keeping everything or one thing in focus when I am taking these landscape photos. With the majority of my shots I could point out what I was trying to focus on but it was not necessarily in focus. The mountains in most of my shots are out of focus and I have taken many mountain shots with the mountains as the focal point of my shot. Maybe I am doing something wrong but I would like some possible solutions to my problem if you guys have any and it would be greatly appreciated. 

-Eliot