That was my walking around lens on my D700. Wide enough and long enough for almost anything I’d encounter and it would be sharp enough open to make carrying more lenses unnecessary unless I knew I’d need a UWA or longer tele. But if you’ve got other lenses that cover that range and don’t mind switching them on and off the camera, sell it.
Two things:
- being successful in photography means being successful in business. If you don’t know how to run a business you will almost certainly fail your dream. That means promoting yourself, marketing your photography, understanding contracts, and keeping track of income and expenses. It’s okay to get someone to help you but you have to know the basics.
- there is an entire world beyond reddit and instagram. Do yourself a favor and find it. There are tons of real life photographers you could talk with. Having the curiosity to even google "How do photographers " will teach you far more than you will ever learn in this sub. Social media does not have all the answers.
Learn to help yourself. You could take the best pictures in the world (there’s probably lots of people who would debate you on that) but if no one can find you and you don’t make more money than you spend, you’ll be working somewhere else in 5-years.