There is a career that would require more than others. It is like being an athlete that it would take years before you could be able to have victory. And even if you work really hard, it does not guarantee that you will be able to have a victorious ending in the end. As it is a competition so you should be able to know that someone will win and someone will lose. Even if you had given your best during training until the competition, it does not guarantee sure victory.
That is why before you will make your decision to become an opera singer, you should also know the different things you have to undergo. One is that you need the time. It will not allow you to become an opera singer with only two years or four years. That is why that also leads to another tip or requirement. You have to love performing as the career journey could take you to foreign places you do not know and have not been to.
That is why there are joys and fun in this career but also the hard work is necessary and patience. You have to gain the disciplines of this career deep within you. Having the right teacher is also a good tip as it would be your mentor into the long journey. It is also a good tip that you try learning another language as you may be required to sing in a foreign language. Let yourself learn along the way even after years of being in the path.