We create our lives a thought at a time. And sometimes, it comes down to changing a thought such as 'Why did this happen to me' into 'There is a divine plan and there is a reason for this, and my choice is to create the most positive reaction I can.'
You can't expect to prevent negative feelings altogether. And you can't expect to experience positive feelings all the time. The Law of Emotional Choice directs us to acknowledge our feelings but also to refuse to get stuck in the negative ones.
You do not need to leave your room. Remain sitting at your table and listen. Do not even listen, simply wait, be quiet, still and solitary. The world will freely offer itself to you to be unmasked, it has no choice, it will roll in ecstasy at your feet.