To reiterate,
Bsus 2 is just a B with an open d string which you hammer on the 2nd fret(* is the hammer on sign).
Bsus 4 is the same as a B except the d string is played on the 3rd fret.
Bmaj9 comes up later and it's like a B except the middle note is on the a string not d
This is how Mitch plays it himself.
Bsus2 * Bsus4 x3 B
Bsus2
i'll start it off by saying i'm not one for the complaining
Bsus4
you wouldn't know it from my writing
B
you wouldn't know it from my songs
Bsus4 Bsus2 *
but i am different, i am free
Bsus4 Bsus4
i am what you need
Bsus2
B Bsus2
but oh my god, i miss you more than i thought was possible
Bsus4 Bmaj9
i understood the obstacles but you could have tried more
B Bsus2
because sometimes it seems, i need a mom more than i need to eat
Bsus4 B
so i didn't eat and i didn't sleep, i'd go all day without a bite
Bsus2 *
and that's not my fault
Bsus4
that's not my fault
Bmaj9
B Bsus2
and i'll admit sometimes my chest gets so tight that i throw fits
Bsus4
you said you'd always be there, where are you through all of this?
B Bsus2
because this is hard, this is way harder than i thought
Bsus4
i'm so concerned about the ending that i don't even know the plot
B Bsus2 B
except for i am different, i am free
Bsus4
i am what you need
B Bsus2 B
i am different, i am free
Bsus4
i am what you need
B Bsus2
so you think of all the things that make you sad
Bsus4
and don't include them in your better half
B Bsus2 Bsus4
because i'm not like you
B Bsus2 Bsus4
i don't find happiness in a meaningless existence
B
i don't know what i'm going to do
Bsus2 B
but i am different, i am free
Bsus4
i am what you need
B Bsus2
and yeah, i believe that there's a god
Bsus4
i believe that there is something out there other than my thoughts
B
i believe it was never science against religion
Bsus2
it wasn't poor against wealth
Bsus4
It was always me against myself
B
and i'm so scared who's going to win
Bmaj9
because i wake up feeling so shitty
B
it's been so long since you've been with me
Bsus2
i don't know where this old body's going to go
or my soul
B Bsus4
but i know i am different, i am free
Bsus2 B
i am what you need
B Bsus4
i am different, i am free
Bsus2 Bsus4
i am what you need