Accept it, and take account of it. For example, you may be preparing for a job interview. Like many people, you may find that the pressure of the situation makes it difficult to express yourself clearly and concisely. The difficulties dyslexia causes are not easily remedied. But the brain, being the marvelous organ it is, compensates for the problem.
Permanent unhappiness is therefore unlikely.
Julie, Vanessa, and David have all worked hard at overcoming their frustration. You can do the same. Recognize that your specific difficulty need not stop you from learning. Persevere in trying to read, write, and spell properly. Doing so will help you to overcome the frustration of dyslexia.