This is the 4855th most frequent Catalan word.
t
The Catalan word "t" is the conjugation of the verb "tenir" (to have) in the second person singular (you have).
The 't'' in 't'estimes' is a reflexive pronoun referring back to the subject 'Tu', making the verb 'estimar' reflexive in this case.
Tu t'estimes molt el teu treball.
You love your work very much.
In this sentence, 't'' in 't'ajudo' represents the direct object pronoun for 'you', indicating that the help is directed towards the listener.
Si t'ajudo amb això, seràs més ràpid.
If I help you with this, you will be faster.
Here, 't'' in 't'oblidis' is a reflexive pronoun since 'oblidar-se' is used reflexively, meaning 'forget oneself of something' in literal translation.