Article V of the constitution allows for two ways to amend the constitution. One way is 2/3 of the state legislatures can propose an amendment that still needs to be ratified by the same 3/4 of the states.
Our federal government has centralized massive amounts of power the constitution does not give it. The constitution gives the federal government 18 enumerated powers and then the 10th amendment was added to to specifically reinforce that any power not specifically given to the federal government is reserved to the states. Since the signing of our constitution we have seen the Supreme Court seize the power to determine what is constitutional and become the final say on what can and can't be law. We now live in a country where 9 people in black robes are able to disregard the vote of every other American. We see a federal government place Syrian refugees who they themselves say they can't seperate the refugees from the terrorists in our states and tell us we have no say. We have a federal government who with the help of the Supreme Court forces us to buy their approved healthcare or pay a fine. We have a federal government who tells us what our kids can eat in school and that our daughters can't have their own locker room or bathroom in school. These are not one of the 18 enumerated powers given to the federal government. We have laws with penalties passed by unelected and unaccountable regulatory agencies because congress doesn't want to put the time into passing laws so they defer to a regulator who we can not vote out. How do we change this? We elect state legislators who will support a convention of states to amend the constitution and put Washington in check. Washington will not fix themselves, we have to remind them that the states empower the federal government not the other way around. As a state representative I will be a loud and ardent supporter of a convention of states.