No personal Born Again by God can fall away from Eternal Life. But they can fall away from rewards. You would do better to understand both terminology and concepts. Do not be too proud to attain information.
1 John 2:2 is not limited atonement. "The sins of the whole world."
Do not speak of friendship with those to whom you lie about the Eternal Word of God. You will be judged more severely for your false proclamations as a presumed teacher.
No such faultlessness can occur this side of harpazo. Otherwise, why would Christ need to "continually intercede" and "advocate" for each of us?
Heb 7:25, "He ever lives to make intercession."
1 John 2:1, "We have an advocate with the Father."
The humanly contrived illusion of faultless...
God is not impressed with anyone's love for Him before Glorification.
Falling away is not possible after receiving Eternal Life. No Scripture gives that.
"Live without sin." Nothing more than somebody's concept.
"Take no thought" is meant to convey "be not concerned." Thought and anticipation are God's Plan for undertaking service and obedience to Him.
#3309/3308 "to be anxious." Pray about it.
Perhaps you should actually live as if today is your last, instead of just mouthing the words.
Or you maybe you need to learn in fact no place in Scripture either instructs or commands Real Christians are to live as if each day is their last. Neither Jesus nor the Apostles did so.
Maybe the...
If you treat every day as your last, why do you have loss insurance, a refrigerator, more than the clothes you are wearing, and photographs of your family?