My only advice as an experience older singer is about singing, it isn't about music. To have a career in music is a completely different question and leads to other kinds of advice and other kind of experts. All you can do is someone planted in my mind very early on, this wonderful truism called, "Fortune favors the prepared mind." Be passionate about being a musician. There is no limit to how hard you must work and how detailed you must be in every facet of what you do, either as a singer, as a musician, or as a person.