My first piece of advice: afer writing "Hola a todos" you must use colon, not comma.
Same subject for "querer" and the other verb:
(Yo) Quiero [yo] comer.
(Tú) Quieres [tú] comer.
(Yo) quiero que + [tú / él /...] subjunctive
(Tú) quieres que + [yo / él /...] subjunctive
Now, "ser" is used to classify, identify and define, and this is exactly what nouns are bout, so "mi maestra" (a noun with a possessive) MUST be used with "ser". You cannot use "estar" with nouns., so forget about "Estoy Lazarus / profesor / una persona / ...".
For the last part I'd simply say "siempre", but if you insist in going that extreme, you can say "toda la vida" or "para siempre".
Do you want to try now'