Passage
Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
John 14:19 (KJV)
Nearby Context
John 14:17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
John 14:18 I will not leave you comfortless: I will come to you.
John 14:19 Yet a little while, and the world seeth me no more; but ye see me: because I live, ye shall live also.
John 14:20 At that day ye shall know that I am in my Father, and ye in me, and I in you.
John 14:21 He that hath my commandments, and keepeth them, he it is that loveth me: and he that loveth me shall be loved of my Father, and I will love him, and will manifest myself to him.
Study Lenses
The verse centers on "world", "little", "seeth", "live", and "shall". It is saying that the verse draws attention to "world" and "little", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 18's "I will not leave you comfortless I..." into verse 20's "At that day ye shall know that...", so "world" and "little" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "world" and "little" with trust shaped by these words, not by a vague optimism outside the passage.