Sometimes I don't know if I realised how lucky I am to fihave found these people. Sometimes I don't know if I realise how lucky I am to have found these people.

Sometimes I don't know if I realisedze how lucky I am to find these people. Sometimes I don't know if I realize how lucky I am to find these people.

Sometimes I don't know if I realised how lucky I amwas to find these people. Sometimes I don't know if I realised how lucky I was to find these people.

You can also say "how lucky I am to have found these people." Just a note, "realise" is UK spelling. In American English it is spelled "realize."

I'm trying to encourage myself to keep going towards what I propomised myself to do. I'm trying to encourage myself to keep going towards what I promised myself to do.

I'm trying to encourage myself to keep going towards what I proposed myself to do. I'm trying to encourage myself to keep going towards what I proposed to do.

"Proposed <someone> to do" is not really a thing native English speakers say. Other ways you can phrase it (unfortunately the setup changes a bit so it isn't 100% applicable to your sentence): "Proposed that <someone> do something" "Proposed to them that <someone> does something"

Always remembering that the person for whom I'm doing this in the first place is myself and the people thatwho loves me. Always remembering that the person for whom I'm doing this in the first place is myself and the people who love me.

AI always try to remembering that the person for whom I doing this in the first place is myself and the people that loves me. I always try to remember that the person for whom I doing this in the first place is myself and the people that love me.

Always remembering that the personople for whom I am doing this in the first place isare myself and the people that loves me. Always remembering that the people for whom I am doing this in the first place are myself and the people that love me.

Though it's not technically "proper" English, many native speakers use "who" instead of "whom" and put the "for" on the end of the clause: "... the people who I am doing this for..." It will sound totally fine in colloquial speech.

I've met so many people thatwho can help me to achieve my dreams and goals. I've met so many people who can help me achieve my dreams and goals.

I've met so many people that can help me to achieve my dreams and goals. I've met so many people that can help me achieve my dreams and goals.

TFor the last couple of days, I'mve been feeling a heartache so often that I don't know if f aI need to see a psychologist. For the last couple of days, I've been feeling heartache so often that I don't know if I need to see a psychologist.

The last couple of days I'm feeling a heartache so often that I don't know if f aI need to see a psychologist. The last couple of days I'm feeling a heartache so often that I don't know if I need to see a psychologist.

The last couple of days I'mve been feeling a heartache so often that I don't know if f aI need to see a psychologist. The last couple of days I've been feeling heartache so often that I don't know if I need to see a psychologist.

Many things arehave been happening lately and I'm not sure if I can do what I want to do. Many things have been happening lately and I'm not sure if I can do what I want to do.

Many things are happening lately, and I'm not sure if I can do what I want to do. Many things are happening lately, and I'm not sure if I can do what I want to do.