You sound like me 5 years ago, jumping about with no clear sense of direction. My advice, fwiw, is to do a career which you're good at, which follows you natural aptitudes. Do some aptitude testing online. All other considerations will naturally work out from this.
And I don't think you've wasted your time on BJJ, no learning is ever wasted. But I'd take up another sport, maybe something you can practice more at home.
Where are you and where are you going?