Just remember that work is not a thrill a minute. Nothing in life is. There will be boring times. There will be difficult times. The question is whether the difficulties happen too often and become a drudge. And you need to take responsibility for making things interesting. Taking on new assignments, getting training in new things, and finding new ways to make the job more interesting are things you should be doing. If your boss blocks you that is one thing (I went through that and left when I found out he did). But if you have the opportunities and don’t take them, that is on you. In that case any job will be boring and bad. Just make sure you aren’t the reason for that.