...Figuring out how to clear up one difficult area of your accent?
...General improvement in several areas?
...Learning to sound just like a native speaker?
Learning to pronounce English just like a native speaker may be your dream, but getting to that level takes an enormous amount of time and practice. Most people do not have that much time available. However, if you learn which factors in YOUR accent are the most problematic, and then make just a few crucial changes in your speaking, it can make a big difference in your ability to communicate more clearly and easily in English.
If you are an advanced learner of English or if you have lived in an English-speaking country for several years, you probably pronounce most things well, but you still may have one or two difficult areas of your accent that hinder communication.
Learning to clean up just a couple areas of pronunciation can make a huge impact on ease of communication and on your level of confidence. My pronunciation coaching always aims to prioritize the one or two areas that are most crucial for you, in order to help you make improvements as quickly as possible.