Anxiety has been really bad lately and I don't know what to do

Work has been insane the past month and my anxiety is through the roof. I wake up at 3am worrying about stupid stuff and it's affecting everything. Haven't been sleeping well, snapping at the wife over nothing, not really present with my kids. I know I should probably talk to someone but I don't even know where to start. Anyone else dealing with this? How did you get help? I feel like I'm the one who's supposed to have it all together for my family and admitting I'm struggling is hard.