These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.(1John 5:13 NKJV)
The only sure way to know what is already yours in Jesus is to believe what the Word of God says, not the physical circumstances.
It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life. (John 6:63 NKJV)