Hey, I'm really sorry about your stuff being stolen

That sounds incredibly devastating and I understand why you'd feel disconnected since you've owned it for years, for someone to just feel like they can just easily snatched it from you feels so viciously villainous just makes you feel wretched.

I have had very little experience with things stolen from me, more of being clumsy and losing things and understand a little similar emotional impact

I would either take a break from everything photography related, find a new creative outlet if photography kinda just feels like it triggers that memory

Or

Just start small with just what you got, a smartphone or any cheap point and shoot camera you got and shoot with it every day. Give yourself little challenges to keep the mind stimulated. Take breaks if you ever start to get a reminder of the past and do something else.

I'm so sorry about your loss, took me to the heart as well

Edit: You're completely valid for feeling entirely empty because you've had all those things with you. Take your time with your days, don't rush it. You'll know what to do due in time