Weekend of Vanity

so... It's like this... I have a moisture issue... Or, should I say my bathroom has a moisture issue, and I have an ADHD issue... My vanity is next to my open concept shower, and I did not seal it to protect it from moisture, and I do not put down a mat or towel to protect the vanity from the said shower... So, I went to lowes and got everything a beginner DIYer needs to install a vanity... This should be good...