Being apprehensive of something means being fearful, anxious, or worried about it. The opposite of apprehensive is confident, assured or certain. Feeling confident means being sure of oneself, having faith in one's abilities, and being optimistic. Assured, on the other hand, means having no doubt about something and being certain that it will happen. Being certain means having no reservations, being resolute and fully convinced. Therefore, if one is feeling apprehensive about a situation, they can work towards instilling confidence, assurance, and certainty to overcome their fears and anxieties.