How not to fear war?

Hi!

Ever since the start of the war in Ukraine I've been very afraid, but nowdays I feel worse than ever. I feel especially bad after the recent announcement of military training and with the fact that I'm having the mandatory milittary commission in a few days. I feel like all I've worked for and all I wish to do and be is becoming just an inachivable dream. Almost as if all I'm doing was useless and will soon perish. How do you guys cope with this situation and is there anything I can do about that?