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.