self-doubt

Synonyms:

diffidence, self-distrust

Antonyms:

confidence

a feeling of trust (in someone or something)

Types:

hesitance, hesitancy

a feeling of diffidence and indecision about doing something

unassertiveness

diffidence about self promotion

Type of:

timidity, timidness, timorousness

fear of the unknown or unfamiliar or fear of making decisions