I don't think so. We've been here before once or twice. :-)
If I'm secure in my salvation, then I desire to do the Lord's work.
And if you are not secure, then you don't desire to do the work?
The bottom line is that when we persevere, we will be rewarded. If you have some need to believe you already persevered in order to motivate yourself, that is one thing.
But it does not change the truth that many who claim they are "saved" by a one-time declaration of faith, will not persevere.
SD