How to live with hard determinism
So hard determinism and everyday life..hmm...perhaps these traits or perspectives are useful.
1). Organisation: organising, categorizing and planning are all to enhance control and order. But they are time consuming. Seeing as you believe in not having control or free will, it would make sense to spend less time doing these activities and more time addressing issues and errands immediately and spontaneously when they arise.
2) Anticipate the future less; A lot of people get anxiety and stress over possibilities, simulating different outcomes before they happen, trying to steer their life around potential obstacles on the horizon and looking ahead. As a hard determinist be present. What is happening now is where you are and what you are doing. It should be where your focus of attention is. The future will happen only exactly one way for you.
3). Learn from the past. The past has happened. It is determined. Learn from the power of hindsight. In a hard deterministic world there is qualitatively little difference in hindsight as there is in foresight. Use the past to navigate what is to come as it likely indicates the direction you are going in terms of successes, goals, relationships etc.
4). Study "Time". If the course of time is totally pre-written then possibilities and probability are illusions masking what is definitely and always was going to be. How then does the present differ from the past and future? What are the determined 'rules' of development for this pre written story? What laws have stayed consistent to allow for complex change and evolution when the mechanism is finite and determined. In essence what determined substance or quality "writes" for everything that seems more uncertain but is not and how can you incorporate these rules into your life.
5). Establish your purpose. You were always planned. Always going to happen. And then influence the universe and environment around you before you die (also planned). Contemplate not how to achieve your purpose (you already are in the process) but rather define it. What exactly is it and why is it already happening and how is it likely to progress?
6). Read about the "Tao". Taoist philosophy delves into what can only be poorly described as a force or flow of existence. It is indescribable by human means but anyways. ...familiarise with this flow as you cannot change the currents or fight them but only integrate. How do you make your life seamless with the changing happenstance around you. Be aware of the state of non-resistance to your planned route.
7). Life happens to you not through you. You dont impact the environment it impacts you. That isnt to say be reckless or irresponsible but rather ...resist reacting badly to negative situations as they are necessary to progress. They were going to happen for 13.8 billion years so why bother get emotional about it.
I did this for fun but hope its useful