Traveling abroad alone makes me a bit nervous

I've been to a few places domestically, but
when it comes to bringing someone along, I had trouble with my companions
every time I went on my two trips to Japan.
There were many things we didn't agree on and we couldn't compromise well,
so I think a lot of it is my own issue too, which is why I've decided to just go alone this time.
I wonder if it will actually be fun...