He that speaketh in an unknown tongue edifieth himself...(1 Corinthians 14:4). As a Christian, when you speak in tongues, you edify yourself; that means you "embolden" yourself. This is the antidote for timidity and fear! It’s something you can, and should do for yourself from time to time; building your spirit strong by speaking in tongues. It’ll transform you automatically from being a weak, fearful person, to a bold, confident, and courageous person! The Bible says, "For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind" (2 Timothy 1:7). Thanks be unto God, for giving us the key 
to maintaining boldness and dominion at all times, even in the face of staggering oppositions, through speaking in tongues. If it ever looks as though fear is creeping into your heart, or you’re feeling nervous about something, speak in tongues! As you do, your faith will rise, and fear will dissipate. Jude 1:20 says, "But ye, beloved, building up yourselves on your most holy faith, praying in the Holy Ghost." There’re times you might experience difficulty in remembering things; speak in tongues. The reason is that your spirit doesn’t forget anything; the information is in your spirit, so when you stir your spirit, the answer will pop up! Don’t take speaking in tongues lightly, for it produces divine energy that repels fear, and confounds the enemy. It emboldens you and imparts courage to your spirit. It produces in you, a sense of mastery and dominion over adversities; it’s a "spirit-to-Spirit" communication that energizes you from within. Practise speaking in tongues regularly; it’s the fastest way to activate your spirit, and energize yourself for victory.