how to lower blood pressure and stress?

so last night i think my blood pressure spiked up and it made me have an anxiety attack and my nerves were all over the place, this never happened before and i have no idea why i was so stressed out last night, i thought i was going to die ... Im barely 22 and dealing with this crap.. Plus i think it has a lot to do with my sleeping cuz i can't sleep early anymore , i have insomnia but i have no idea why my blood pressure spiked up last night , i wasn't even thinking about anything, just was watching a tv show on my phone . 😐laying down ..