While some factors are genetic, Rutkowski says that growing up in a musical environment strongly influences whether someone sings well and confidently. Singing is partly innate and partly a learned skill. You can be born with vocal tracts that are physiologically sized and shaped to give your voice a more pleasant sound, which naturally lead the way to becoming a singer. But controlling and configuring the vocal muscles to be able to sing well is a skill that you learn.
It's definitely relative to your initial musical ability. If you can sing in tone, that's a good start, & will be able to improve the strength of your voice with different warm ups & exercises. If you need to strengthen your ear and sing in tone, I would focus a lot more on that to begin with because it's an important foundation. The breathing technique is also important as a basis.
Movie stars learn to sing all the time for a role (usually surrounded by a team of vocal teachers and months of daily practice). By investing time in learning to read music and understand musical concepts, you'll learn to sing better and faster. In this post, I will disprove some of the common myths about learning to sing, offer some useful tips on how to improve singing, share some tips related to practice and how to care for your voice, and examine the mindset that leads to success in singing. Now I can sing something basic, my vibrato starts to come in slowly, I learned to hold my breath and I even learned to fry screams and sing the basic throat (kargyraa).
There are many examples of people who came to a singing career late in life, and children of any age can be expert students if instruction is developmentally appropriate. Breathing exercises are essential to learning how to use the diaphragm, which is crucial for developing a powerful singing voice. Research carried out by several universities has shown that training and practice are more a factor than the natural ability to learn to sing. But there is no way to avoid that it takes time, work, dedication and real effort to learn, which is practically true for anything in life, and especially for singing.
Countless school teachers and parents have heard a child sing out of tune and have taken them away (sometimes not so softly) from learning music. If your singing voice has been criticized and left you reluctant or afraid to sing, this is the barrier that prevents you from learning to sing. Practically anyone else can learn to sing with practice, so don't listen to the nonsense that you don't have the innate talent for singing.