If you have selected a good broker, then you will not have to worry about the other things related to the spreads
. The broker will take care of that. The person or the company providing the brokerage services will make sure that you are making profitable trades. His profit is connected to your success. So if you are making profit from the forex market, then the company or the person providing you the services will also make profit. This makes everyone work for the same strategy and the same business plan. If broker does not have the same plan and strategy as yours, then you must select another one and should give up on your current broker.