As with any profession, if you enjoy what you are doing, it is easy. If you start out with an interest in History and the origin of things, and you enjoy doing the research and investigation to determine the facts, it will be easy.
It takes at least 4 years to get the basic education, and an additional 2 years education in your specialty. After that, you can usually begin an internship or get an entry position which can be the hardest part, because you are going to be doing the tedious work no one else wants.
There are many different branches of archaeology. Somewhere along the way, you will want to choose the approach you feel most comfortable with.