Letters to the past

Ever since i was 13, I have been writing letters to my future self; or rather, my past self has been wrting letters to me and our future selves.
I am 23 and i just opened a letter from my 13 year old self that was marked on the envelope “DO NOT OPEN UNTIL BIRTHDAY 2000.”
She told me a lot about herself and asked me a number of questions.
I have also opened letters from my 18-year old self and 21 year old self.
My 21 year old self received a letter from my 18 year old self as well.
My 20-year old self got a letter from my 16 year old self.
There are also letters addressed to my 40-year old self, my 30 year old self, my 62 year old self- you get the idea.
I have them all in a binder, but I can’t read the ones that are not addressed to me.
Anyway, I always write back.
I answered a few of my 13-year old self’s questions, but I didn’t say anything too specific for fear of upsetting the space-time continuum. I just wanted to give her hope. I thought that wouldn’t alter the universe TOO drastically if my 13 year-old self had a better outlook.
My problem is, I don’t know how to mail these letters to my past selves.
When I respond to a past self’s letter, I end up just putting it in my binder alongside the first letter.
I told my roommate I was saving them in case someday I figure out how to send a letter to the past.
He said that if i ever do figure out a way to do that, then I would have had the letter from my 23 year old self since I was 13. It would already have been written.
Also, right now i should have letters from my 62 year old self, my 30 year old self, and my 40 year old self and all the other me’s of teh future.
Is he right?
If not, can anyone still help me find a way to send all these letters backward through time?

All you need is:

A washtub (as a chassis to hold everything)
A mailbox (for the letters, of course)
About 25 feet of 3-wire Romex cable (to hard-wire different pieces of equipment)
2 dozen wire nuts (to connect your wires)
A VCR or computer (basically anything you can find that will allow you to set a date and year)
A soldering iron
Flux capacitor (you can find one at Radio Shack I believe)
Approximately 3 pounds of Uridium-234 or 1.7 pounds of plutonium
Gotharian crystals
Chimpanzee or a Rheesus monkey (the chimps are easier to handle, but the monkeys fit into the mailbox easier, you’ll want to test it before risking losing your mail, right? You’ll know if the test works if you suddenly have a memory of the mailman delivering a chimp or Rheesus monkey to your house for no reason.)
Let me know when you’ve got all these materials ready and I’ll then send instructions for assembly to you through e-mail

Thanks for the help, but the only flux capacitor I have seen recently was in my boyfriend’s Delorean.
It is out of service until we can generate 1.21 jigawatts of electricity by some means other than plutonium.
And no storms are in sight.

No problem.

Substitute the flux capacitor with 6 dozen D cell batteries, a lawn mower engine, 3 pinwheels, a 12 inch oscillating fan, and a Woody Woodpecker pez dispenser (don’t ask me why, but it only works with Woody Woodpecker!)

With this set up (which is more time-consuming and expensive than just buying a flux capacitor) you’ll need an extra 10 feet of 3-wire Romex cable, another box of wire nuts, and about 10 gallons of gas per use.

You can disregard the uridium-234 and plutonium now, but you still need the Gotharian crystals.

My dad called me from the past on the radio, but he was in the future and I was in a schlocky movie.
Does that count?

When you’re at that party at Wanda’s in Grade Eleven, and Christine S. asks you to go out to her volkswagen van–GO, FOR GOD’S SAKE!