Matthew 10:38
He who does not take up his cross and follow Me
(cleave steadfastly to Me, conforming wholly to My example in
living and if need be, in dying also)
is not worthy of Me.
Whoever finds his lower life will lose it (the higher life) and
whoever loses his lower life on My account
will find it (the higher life).

Matthew 16:24-25
Then Jesus said to His disciples, If anyone desires to be My disciple
let him deny himself (disregard, lose sight of, and forget himself
and his own interests)
and take up his cross and follow Me
(cleave steadfastly to Me, conform wholly to My
example in living and if need be in dying, also).

For whoever is bent on saving his temporal life (his comfort and security here)
shall lose it (eternal life);
and whoever loses his life (his comfort and security here)
for My sake
shall find it (life everlasting).

Luke 14:26
If anyone comes to Me and does not hate his own father and mother
his wife and children and brothers and sisters (yes) and even
his own life also - he cannot be My disciple.
And anyone who does not persevere
and carry his own cross
and come after (follow) Me
cannot be My disciple.

John 12:24-26 Amp.
I assure, you, most solemnly I tell you,
Unless a grain of wheat falls into the earth and dies,
it remains (just one grain it never becomes more
but lives) by itself alone.
But if it dies, it produces many others and yields a rich harvest.
Anyone who loves his life loses it,
but anyone who hates his life in this world will keep it to life eternal.
(Whoever has no love for, no concern for,
no regard for his life here on earth, but despises it,
preserves his life forever and ever).

If anyone serves Me, he must continue to follow Me
(to cleave steadfastly to Me, conform wholly to
My example in living and, if need be, in dying)
and where I am, there will My servant be also.

If anyone serves Me, the Father will honor him. 

Luke 17:32, 33 NKJ
Remember Lot's wife.
Whoever seeks to save his life will lose it,
and whoever loses his life will preserve it.

Luke 9:22-24 Amplified
The Son of man must suffer many things and be
(deliberately) disapproved and repudiated and rejected
on the part of the elders and chief priests and scribes,
and be put to death and on the third day be raised (again).

And He said to all, If any person wills to come after Me,
let him deny himself
(disown himself, forget, lose sight of himself
and his own interests,
refuse and give up himself) and
take up his cross daily and follow Me
(cleave steadfastly to Me, conform wholly to My example
in living and if need be, in dying also).

For whoever would preserve his life and save it will lose and destroy it,
but whoever loses his life for My sake,
He will preserve and save it (from the penalty of eternal death).
For what does it profit a man, if he gains the whole world
and ruins or forfeits (loses) himself.

Mark 8:33
He rebuked Peter, saying, Get behind Me, Satan!
For you do not have a mind intent on promoting what God wills,
but what pleases men (you are not on God's side, but that of men).

And Jesus called to Him the throng with His disciples and said to them,
If anyone intends to come after Me, let him deny himself
(forget, ignore, disown, and lose sight of himself
and his own interests)
and take up his cross, and (joining Me as a disciple and
siding with My party) follow with Me
(continually, cleaving steadfastly to Me).

For whoever wants to save his (higher, spiritual, eternal) life will lose it
(the lower, natural, temporal life which is lived only on earth);
and whoever gives up his life (which is lived only on earth)
for My sake and the Gospel's will save it
(his higher spiritual life in the eternal kingdom of God).