IDs please, late 70s / early 80s

[SemiTone]

Four tunes to ID from the lyrics, please. All male artists. Soul/funk, late 70s/early 80s. [Approximate timings in brackets.]

1.
Just how bad do you want it, are you willing to work hard?
Have you got what it takes, to reach that shining star?
[~6:50]

2.
If I had it over to do again, I'd do it, I'd do it again
If I had it over to do again, I'd do it, I'd do it again
Happiness is a treasure that many will never find
But I found my treasure the second you said you'd be mine
[~3:35]

3.
(It's so hard to say what's going down today) So much confusion (in the world)
(Peace of mind is so hard to find) It's all an illusion yeah (...)
A little common sense could bring a change yeah
Yet it's much too much to ask folks nowadays
To each his own, to do their own thing
...
(Much too much) Yeah (much too much, in the world today)
(It's so hard to do what you really want to do)
[~3:56]

4.
(We should be loving)
(Tonight is the night) x4
Tonight is the night, say we gonna party (we gonna party)
[~4:33]

Edited November 7, 2021 by SemiTone

[SemiTone]

One ID per person per day, please, to give others a chance.

P.S. I have searched on Discogs and Youtube without success.

[SemiTone]

My searching has improved and 3 & 4 are known now.

3. Much Too Much - 9th Creation - 1979

https://www.youtube.com/watch?v=KgCoO5YnAVI

[SemiTone]

4. Tonight Is The Night - Kwick - 1980

https://www.youtube.com/watch?v=DG4FXVcTdDQ