Paul makes a list, and lists like this are worth reading slowly, because he is not being poetic. He is closing exits.
Death and life. Angels and principalities. The present and the future. Powers. Height and depth. Then, in case he has missed something, anything else in all creation.
That last clause is doing the work. He anticipates that you will think of a case he did not name. Your specific failure. The thing you did in March. The season where you stopped praying and did not miss it.
It usually surfaces at night. The house is quiet, the phone is face down on the bedside table, and your mind goes back to one conversation, one decision, one year. You have heard this passage preached. You agreed with it. You simply assumed it was written for people whose record looked slightly better than yours.
He got there first. Anything else in all creation includes you, since you are also a created thing.
This is the end of Romans 8, and it is the end of an argument, not a greeting card. Paul opened the chapter by telling believers they stand uncondemned. He moved through the Spirit who helps us pray when we have no words, through a creation that groans, and into a run of questions about who could possibly bring a charge. The list is his answer. I am convinced is the language of a man who has examined the case and is not expecting new evidence.
Notice what is being protected. Not your grip on God. The love of God that is in Christ Jesus our Lord. That is the thing nothing can sever, and it was never held in place by your performance.
Name the exception you have been carrying. Write it down in plain words, the specific thing, not a vague sense of being the problem. Then read the last clause again and put your exception inside it, where Paul already put it.