Why would you want to improve your singing voice from its current state? Is it because you feel that you have not reached your full potential in terms of what you want from your voice, or perhaps you have ambitions to reach out for the stars and make a career from singing? You need to have a clear idea of what you want to gain from singing right from the beginning.
Whatever the reason it is always possible to make an improvement to your singing voice; remember, that even the top professional singers spend many many hours every day practicing their singing, striving for that extra note or even octave as well as perfection on key change that will improve their voice to the nth degree and make their career more satisfying and enjoyable from their own perspective as well as for their audience.
To learn how to sing properly, so that you can attain a level of singing that is close to that of the professionals, (or even as good as) is not so far beyond your reach as you might think, because there are singing training courses now on line that you can take up and learn from to give you the extra impetus to reach that full potential you are looking for. More importantly,singing courses that you might study for through a college or such like can be very expensive as well as perhaps taking you many months or even years to complete; whereas singing courses on line are not only more cost effective (which means you can continue with your present job), bur you can also find it easier to follow and less time consuming and give you the chance to improve your singing to a much better level than currently.
When you feel that you have at last reached the level of perfection with your singing that you are looking for, you can decide what it is you want to do with your life; is it just to be able to sing in front of your friends and family,to sing at the local karaoke, or do you want to strike out into the world of entertainment and earn yourself a living.
So, what is it that this on line singing training can offer you? The whole range of training for improvement of your vocal range, to learn how to be successful at auditions, to learn how to sing in harmony, to learn how to sing with a band, to learn how to sight read music,to learn how to get perfect pitch ear, to learn how to get the best performance out of your voice, to learn about proper breathing control, to know the difference between your "head" voice and your "chest" voice and projecting your voice properly by using your diaphragm and much more.
All of this is possible by going on line to a singing training course and giving yourself every chance to improve your singing voice and completely change your life!