2 Timothy 1:7:

For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.

Notes on 2 Timothy 1:7:

Surely God has not given you “the spirit of power” only to have you stay sick and in need of healing power in your body.  You received power when you were baptized with the Holy Spirit.  The same Spirit who did miracles and healings through the apostles lives inside your body right now!  Surely if His power healed multitudes through the apostles and can heal others through you, it can heal you!

This verse is sometimes used to “prove” the notion that “fear is a spirit,” but that is unsupportable by the Greek word used here for fear (deilia), which refers to timidity or cowardice, not horror-movie style fear or fright, which would be phobos instead (think of the English word “phobia”).  The next verse (2 Timothy 1:8) follows the idea of not being timid as opposed to not being frightened: “Be not thou therefore ashamed of the testimony of our Lord, nor of me his prisoner: but be thou partaker of the afflictions of the gospel according to the power of God;”

Also, sound mind literally means self-control or sober-mindedness, so this verse should not be used to “prove” that healing from mental health issues belongs to you.  Other verses can be used to prove that, particularly ones in Deuteronomy 28 that describe various mental illnesses as being part of the curse for breaking the Law.  Christ redeemed you from all these “curse” conditions.

See also:

Dealing with Fear
Who You Are and What You Have
Different Ways to Get Healed
Verses Incorrectly Cited as Healing Scriptures
Are We Redeemed from Mental as Well as Physical Illness?
Can I Get a Certain Minister’s Anointing for My Own Ministry?