If you want to self-improve, then do it. Nobody will teach you how, and it starts with you. There isn't a goal. Self-improvement is a journey that everyone is on until they die. It's like becoming wiser: you can't become wise, because wise isn't measurable, having no limit. You can become wiser, meaning that you know more *things* that can aid you in your life. The only wise being out there is God, and He is perfect, which is why humans can't become wise. Just like self-improvement, there is no limit, because we are imperfect. There is always more that we can do to become wiser and more improved.