turn reflect into comparable data

I want to be able to compare the type of an object using reflect. Here is my code:

package main

import (
    "fmt"
    "reflect"
)

func main() {
    tst := "cat"
    if reflect.TypeOf(tst) == string {
        fmt.Println("It's a string!")
    }

}

This gives me an error type string is not an expression. How can I fix this only using reflect? (no type switches, etc.)