Go through this in order to manage your relationships/friendships well.

1. a) Have utmost respect for them.
b) Realise the value of their support and care.
c) Appreciate them and express gratitude for all that they have done
for you.
d) Give them that compassion when they need it.
e) Lift them up during their tough times.
f) Guide them in the right direction.
g) Always try to spread positivity cheer smiles motivation care and
support.
h) Strive to show understanding and flexibility.
I) When things do not work out between you and them sometimes;
set aside your ego and anger, and attempt to resolve the differences
by talking it out with each other patiently and lovingly.
j) Be brutally honest with one another always.
k) When things do not seem to work out despite doing everything, it
is way better to walk away from that person rather than holding on
and pretending to be "fine".
l) You should know where to draw the line as in where to stop
tolerating all that stuff you do not like.
m) Set the expectation from the very first minute to avoid any kind of
disappointments/misunderstandings down the road.
n) Do not expect the other person to read your mind, if you have
anything on your mind just say it out loud (communicate the same to
them).
o) Be an attentive listener when people share something with you
and do not interrupt them when they are speaking.

2. p) Spend quality time with them which makes them feel valued and
shows your keen interest towards them.
q) When someone has done something for you, endeavour to give
back in your own way.
r) Don't get insecure or be too possessive or controlling of someone.
s) It is alright to be vulnerable to him/her.
t) Sometimes we forget how important the basic things are; viz
replying/responding on time, reaching out to them often, making
conscious efforts to add value to their lives, being polite and humble,
sharing and asking about stuff frequently, you know.
u) Whenever things are not right, it is paramount to hold onto the
positives of that friendship/relationship/relation and
remember/realise those positives and try to arrive at a solution.
v) Seeking for forgiveness when you have done something wrong or
when you have let down the other person, is a must.
w) Forgive the other person if they are worthy of forgiveness.
x) Their words (what they say) and their actions (what they do) need
to go hand in hand i.e., it should match/coincide.
y) There will be certain expectations attached to you, it is your
responsibility to take consistent actions to live up to those
expectations.
z) Finally, you all know this, you need to feel good, happy, loved,
valued, cared for, respected, supported around them; else it makes
no sense to continue with that relationship/friendship/relation so on
and so forth.