It's a little difficult to know how driven you are to succeed in real estate from your limited post. Unfortunately, many jump in because they think it is easy money. Although you mention a backup plan, I'll assume you have a passion for real estate and are looking at this as a long-term career/business. Those that take it serious and operate like a business (and not a part-time hustle) usually don't have a Plan B. They are all in and understand that it takes time to become a competent & successful agent. You need to plan to develop your sphere, your area of expertise, knowledge of your local contracts, how to manage the various emotions of many clients, etc. Having some experience in sales, marketing, business management, negotiations, etc. helps but can be learned over time. I'd suggest you consider joining a small team that focuses on the area of real estate you'd like to specialize in. A career as an agent can be very stressful and challenging yet extremely rewarding, not just financially but in freedom (time).
As others mentioned, tune out the noise from those that are not supportive. Best wishes on your real estate journey!