Hopes & Dreams; Travelling

What with feeling ill, I decided to do some research and reading on travelling - This always cheers me up.
I have read about parts of the USA, Canada, Asia (Russia), Australia, Papua New Guinea, New Zealand and other smaller islands. There is so much to read, I am enjoying learning about new places.
Today I have been reading about Thailand. It's not somewhere i am particularly fond of nor top of my list of places to visit, but the more i read about Thailand, the more fascinating i find the place and am actually growing to like it.
The most appealing thing is the amazingly beautiful beaches and how cheap it is there - On my calculations, you could get by relatively easy and comfortably for 3 months with just £1500 in your pocket - maybe even less if you rough it, unfortunately though, there are a few creature comforts i just couldn't live with out.
As with everywhere you go, there are positives and negatives, it would not be possible to visit everywhere in the world i want to go - you could only do that if you have unlimited funds.
Part of me is concerned though, with my illness, I wonder if my dream of travelling and constant reading about it will set me up for a harsh fall - at the moment travelling more than 10 miles is impossible, let alone globe-trotting thousands of miles and being away from home for months, possibly years.
I am determined to make the 'impossible' possible, but the dream appears to be distantly fading.
I remember when i was 21, i set myself a target that i will go travelling and be travelling on my 30th Birthday - this is just 3 and a half years away, so i don't think it will be possible, health wise and financially.
So here is a new target - I WILL go travelling by my 35th Birthday, if i don't do it by then, i never will - i will be too old. I have missed the best years of my life having this rotten illness, I am going through a stage where i am starting to feel old - I need some of my 'Youth' back - meaning i need to feel my age, I am still young - I am only 26 still but i feel like i am 50. Being stuck indoors for 10 years is really starting to drag me down, I have missed out on so much, i feel like I have been like this forever.
There is a whole wide world out there i need to feel, experience and see, my dream and hope is that one day i will experience 'the unknown world', because there has to be more to life than one room.