the one verse that would apply to all the above would be
1jo 4:4Ye are of God, little children, and have overcome them: because greater is he that is in you, than he that is in the world.
Fear :
Mt 10:28And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.
Depression:
Lu 10:20Notwithstanding in this rejoice not, that the spirits are subject unto you; but rather rejoice, because your names are written in heaven.
Negitivity:
Php 4:1Therefore, my brethren, dearly beloved and longed for, my joy and crown, so stand fast in the Lord, my dearly beloved.Php 4:2I beseech Euodias, and beseech Syntyche, that they be of the same mind in the Lord.Php 4:3And I intreat thee also, true yokefellow, help those women which laboured with me in the gospel, with Clement also, and with other my fellowlabourers, whose names are in the book of life.Php 4:4Rejoice in the Lord alway: and again I say, Rejoice.Php 4:5Let your moderation be known unto all men. The Lord is at hand.Php 4:6Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God.Php 4:7And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus.Php 4:8Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.Php 4:9Those things, which ye have both learned, and received, and heard, and seen in me, do: and the God of peace shall be with you.Php 4:10But I rejoiced in the Lord greatly, that now at the last your care of me hath flourished again; wherein ye were also careful, but ye lacked opportunity.Php 4:11Not that I speak in respect of want: for I have learned, in whatsoever state I am, therewith to be content.Php 4:12I know both how to be abased, and I know how to abound: every where and in all things I am instructed both to be full and to be hungry, both to abound and to suffer need.Php 4:13I can do all things through Christ which strengtheneth me.