I agree. I add that it is possible for some to overdo this new “tenderness of conscience”, so you should talk to your confessor about this stuff if you have questions, or seem to be seeing stuff as sins that might not be.
But the more you get sin out of your life, the more you will notice and hate even venial sins.
Besides the devil tempting you more, which is true, you have been stirred up in your soul and mind. You have probably been thinking more about your life, and so some of the old wounds and scars in your life are starting to trouble you again. Parts of you never grew past your teenage days until now, so they are urging you to do teenage things.
If you pick out good teenage things to do, like stuff you could not realistically do then but which an adult could honorably do, this might be a good time to do them. This will make your younger self feel happy, and the rest of you can get past the old temptations and bad memories.
But this will not all go away quickly. Be patient about retraining yourself, and get up and keep going when you fail.