I believe it's important to have a passion for what you do. If you don't have a passion, you won't have the energy to keep going when things get tough.
If you're trying to achieve, there will be roadblocks. I've had them; everybody has had them. But obstacles don't have to stop you. If you run into a wall, don't turn around and give up. Figure out how to climb it, go through it, or work around it.
