How to stay focused prospecting

Sup savages.

I am currently a MM AE at a SaaS company, been there about 2 years. The entire time I've been there, the amount of resources the company provides us to source deals are comically minimal. Almost 0 inbound leads, 0 SDR's for our market segment - every deal I've closed, I was the one who initially cold prospected into the account in order to book the first discovery call (slight brag? maybe. but also the honest truth).

After 2 years of doing all my own prospecting with hardly any support from my company, I am completely exhausted & unmotivated to do it anymore. Additionally, my accounts list has been exhausted and, surprise surprise, my company does not pay to get newly sourced leads/accounts lists.

I am at the point where if I do not have any calls with current customers or open opportunities, I don't really do much throughout the day. This is a terrible habit to get into, but I just cannot get myself to prospect on a consistent basis.

How do you manage to stay motivated on a daily basis? How frequently are you realistically prospecting on a weekly basis? What process do you follow that keeps you 'excited' to prospect? Any and all advice is appreciated!