Once you are born again you have eternal life — that life is ETERNAL. You can have Assurance of your Salvation if you understand the Word of God regarding Salvation.
@goodboy created this topic and he posted many encouraging messages that have the purpose of giving the Christian Assurance of Salvation. Here’s the link to one of @goodboy ’s posts. There are many more in that thread.
Please read them and be encouraged, you are forever God’s child!