I constantly think about how my life is nearly over ( in my mid 20s ) and how I will be dead soon. It makes me feel sick to my stomach and I cant seem to shake the feeling. Its worse in the evening and at night. I used to drink every night to self medicate and eradicate these thoughts but due to benzo abuse I can't even do that anymore.

Does anyone know how to fix this thought pattern or just have my mind fixate on something else? 

I think the fact of being in lockdown and having nothing to look forward to makes it worse.