There are a lot of reasons to wait to travel. One might be that you’re too young, or you’re not in a good place mentally or physically to do it. Traveling takes a toll, and I think that in order to come out the other end without too much damage done to you, you’ll probably want to be in a decent spot mentally. If I had fallen into astral proper when I was still in college, I probably wouldn’t have been able to handle the situations as well, and I might have done more harm than good because my ability to cope was pretty shitty at the time. I’d gone through a bunch of shadow work in the years preceding falling into the astral, and I don’t think that was a coincidence- I think it was preparing me. Physical limitations are also an issue, as it can be hard on your body to break through Over There. I had to find other means to connect to the astral when my stomach started to die because the methods I used at the time were too taxing for me. They still are.
You’ve also got to consider time limitations- if you want to take this seriously, you’ll probably want to go a few times a week, and not everyone has that much free time lieing around. Ofc, you may get lucky and land over there and only need to show up one a month, but you won’t know until you get there. So I always recommend that people prepare for worst case scenario type stuff- and worst case is you’re there every day, or every few days. If you don’t have time for that, probably best not to bother.
There are also locational issues, which are similar to the above issue of time. If you live in a location that doesn’t allow for a lot of time for focusing or practice, then you’re probably better off waiting until you’re in a better place where you can work freely without distraction.
And that’s just scratching the surface on why you should wait. The other issue that I always bring up is that you have to make sure that you’re prepared for whatever you may or may not come across Over There. Because once the door is open, it’s hard to close it again. The deeper you sink into the mud, the harder it is to walk away from it, or to travel less. F’ex if I wanted to entirely stop now, I probably wouldn’t be able to. Even if I didn’t travel while awake (which I have limited time for that right now, and haven’t been doing much while awake), it would still bleed into my dreams, and probably bleed into my mind even while awake. Once you get too deep, it’s really hard to get out again entirely.
As for picking a right time, that’s kinda a YMMV sort of thing. I feel like for many people, the time is right when it bugs them so badly they can’t ignore it. I dabbled a bit in my interior/prison space for many years without doing much. But then one day I kept getting these images and this pull and I just couldn’t ignore it anymore. It got too strong for me to continue to ignore it, and that probably was an indication that the time was good. So if it’s burning a hole in your head, it might mean that you should delve into travel.
But I don’t think it’s always about feelings. I think that anyone can try to travel at any time (success rate is another story), but that you should make sure that you’re mentally and physically prepared for what you may be getting into. Making sure that you’re mentally mature enough to handle whatever may happen, and that you’re able (and willing) to possibly dedicate a large chunk of your life to doing this. Ofc, you may not need to, but being prepared for any and all possibilities before you step through the threshold is important, imo. Because if you don’t prepare, you’re opening yourself up for problems.
Things that you can possibly run into? Pretty much anything you can think of. You may land into war zones. You may wake up in a jail cell. You might wake up in a nest of weird creepy crawly things that want to eat you. You can be tortured, beaten, sexually assaulted, physically or mentally assaulted. You may be forced to watch other people go through these things. You may wake up in no man’s land where no one or anything is alive. I mean, pretty much anything that you can imagine. Ofc, you may wake up in the nicest part of town, too, with a loving family and people that care for you and you may never have a bad experience ever.
But if you’re not prepared for the possibility of the first half of that paragraph, then you’re probably not ready to poke at that door.
I’d also possibly recommend looking at the astral FAQ page which has stuff on why teh astral can suck ass and all of that.