My advice would be firstly allow yourself a "holiday". So when you first retire, I think if you look in the long term and start wondering what you can afford and what to do etc., that is a way to become more anxious. While you were at work, you no doubt took holidays and at that time you would be choosing what to do and where to go and what you could afford, but you were not wondering what you might do in the next ten years. So I suggest you begin by having a holiday. This time you can not only choose where or what you would like to do, but also have the luxury of choosing when. You will be able to go outside school holidays, stay a bit longer or go in the middle of the week or whatever. You might choose to drive somewhere and stop overnight on the way and have a chance to call in at a National Trust place you havent visited before. Dont try and look miles in the future, just enjoy that extra freedom and hey you can even decide to stay away for an extra day or so, nothing to stop you!! Now if you had been offered that whilst you were at work you would have thought that was great!!
While you are off and about, you might also think of things you had wanted to do in the past, but hadnt the time. With only one holiday a year you probably didnt risk something new. Well this time of year is the start of school and of course the start of new evening classes etc. So, for me, it is like a child in a sweety shop, looking at all the courses that are going on. You could try a beginners course in all sorts of things, baking making pots, playing bridge , woodwork or whatever. As a beginner there is no pressure, you can just try something for a while. The result might be you find something you love and go on with it, or dont enjoy it and pack it in very quickly. Again doesnt matter which it is, you are having the opportunity to have a go at something you have never tried before.
Now I have always helped with charities during my life, and it has changed according to where I was and what my life was doing at the time. So again my suggestion is at first dont commit yourself to a set time in anything to begin with. My cautious way was to offer what time I could but state it was only possible for a set period of perhaps a month as I might be going away or whatever. Whilst that might be true or not, having a go for a month or so, will show you exactly what is required and you can then decide if that is something you want to throw yourself into or not. You might also consider things like helping at things like cubs or brownies, where they are always needing help, or there might be schools that would be glad of help with things like hearing children read . You have a huge choice. Helping with things like plant stalls or baking or whatever for a charity not only means that you meet a lot of people also helping in the same thing, they will be telling you about other things happening near you. I would also suggest that you get your local newspaper every week, and start looking at what is happening near you. For me the balance is in trying things out, not overcommitting yourself in the beginning , but the more you share and help you will find the place you want to be and I am sure there will be something you enjoy that you wonder why it has taken you so long to find it. Do you like gardening/ Are you happy to just do ordinary things like weeding and so forth. There are many people who cant manage their gardens as they would like through ill health or whatever. You would certainly find yourself in demand , whether you kindly helped out a neighbour, or decided to do it as a part time job. So I think that your first port of call is the library, where there will be all the notices about what is going on in your area. You could look at what was on offer while you are away on your little holiday. Good luck in finding something you enjoy, keep looking on here for lots of info, comments and ideas. Do let us know some of the highs and lows of things you have tried, whether it is deep sea diving or becoming a model in a life class at the local art college!!