It depends where you are from, and what you can do.
If you speak Finnish, your life is a lot easier. If you speak English you are a little better off. If you speak Swedish, you could do well in the Swedish-speaking parts of Finland.
If you work in the technology business and can get a job, you should be OK.
If you are from the EU, the visa is not necessary – you can stay for three months minimum, if you can support yourself after that time then you can stay longer. If you are from out of the EU then it’s harder, but the Finns don’t turn people away for no reason.
A really good way to get here is through study – find a university which has an exchange scheme with Finland, and do your best to get onto it. You can see the country without committing to stay – and you’d be surprised how many people come as exchange students and then stay on.
I’m in Oulu, Finland. It’s snowing outside. 23 months ago