I love that everyday is different and that I get to form lasting relationships with so many people. When you're someone's realtor you get to know a lot about their lives. Sometimes you're a sounding board, sometimes a therapist, sometimes a shoulder to cry on, or someone to jump for joy with. It's so much more than, "Hey, let's sell your house".
Although this business is really tough and only the strong survive, if you are goof at your job, continuously educate yourself and truly care about what you do, you'll be successful no matter what.
To trust myself and my abilities. When you're new and dealing with millions of other peoples' dollars, it's easy to second guess yourself and seek the advice of others. But this advice can be wrong. Always do the prep work yourself and trust your gut. You will be the best advocate for your clients and make the most informed decisions for them.
Find a good Realtor. They are the key to your success, and you will 100% see their value throughout the process. Do your research, interview a few agents, and see who fits in with your wants and needs. Don't just hire your friend's, mother's, second cousin, or someone who "looks busy" on social media. Hire a professional who does this full time.