Figure out what you're passionate about. If you're not passionate about something, go find it. Because we do not need more unengaged boring people to inhabit this planet.
I am learning to be more vulnerable and open on stage. This comes with the development of my acting abilities.
I sustained an injury by singing with the flu during the second performance of Andrea Chenier in Buenos Aires. I was very sick, with chills and sweats, but against my better judgement I let them talk me into singing. Of course I gave the performance everything I had and my voice was hurt. It was scary at first, but fortunately there was no permanent damage. I just had to be patient and wait for the voice to return. It took six weeks of physical recuperation and it took time to recover my confidence as well.
It is funny, I don't feel old enough to give advice... But with the advisers you trust, you better listen to them. It may be bad news but that's the only way you're going to improve.
I generally prefer to stay quiet before a performance. I don't like television cameras, but an interview is OK.