How am I going to enforce my patent?

In general, it is not easy and it is quite expensive to enforce a patent. If someone is infringing your patent, you will have to convince them to stop, and if you cannot, you will have to convince a court to make them stop. A patent lawsuit can take over two years just to bring to trial, and can cost several million dollars. There are lenders who might be willing to fund your lawsuit, and there are attorneys and law firms who might take the case on “contingency” (you pay them only if you win, but generally more than if you were paying them unconditionally), but it will likely also take a great deal of time and effort.