It's possible to lose faith in one's own creative ability. The loss of faith can arise in different ways and last for different periods of time. Some artists never really believe in themselves and yet continue to create. Others lose faith after receiving negative criticism from an audience, critic, friend or family member. Others become dissatisfied with their own creations or with their low productivity or low publication rates.
The beginning of a new year is a good time to reassess one's loss of faith. Knowing that not all artists have creative self-confidence may help one carry on with creative activity.
To re-emerge after a period of stasis may be difficult, especially if that stasis derives from one not believing in one's creative ability. Simple creative exercises may be useful as first steps toward reanimating one's creative life.