Rather than a problem, I believe you've stumbled upon something key to interesting characters!
Allow me to explain why contradictions in characters like this is good:
There is a difference between Character and Characterization.
Characterization are those traits of personality, appearance, demeanor. Basically everything you can DESCRIBE about your character physically, mentally, and spiritually.
Character is the ACTIONS your character makes when they are under pressure. How do they act when under meaningful stress? That reveals a character's Character, who they really are under that front they display to the world and sometimes to themselves (for more internal conflicts~).
For example, you said you have a character who is Lazy. And when there isn't any pressure to do things then yeah their actions will demonstrate that laziness. Thus their actions are not in contradiction to their Characterization.
However when faced with a project that they love, that has the consequence of unhappiness if they don't get to work on it-- it puts pressure on them via their internal desire for an external outcome. Thus they demonstrate their true Character as someone who, in this circumstance, is not lazy at all!
The reason these two things coexist is because principal characters in a story ought to be interesting, multifaceted beings. The only difference between their characterization and Character is the situations they find themselves in.
In terms of good story, your principle characters should, generally, have contradictions between their Characterization (how they present themselves to the world and act without pressure) and Character (what they DO under pressure that reveals the core of their being.)
I believe by understanding this principle, you can better guide the development of characters that will capture the interest of the audience by showing that they are more than they seem.
I hope this helps.
Caveat: Generally speaking when characterization matched Character, it leads to a boring character.
However, sometimes protagonists especially might have more alignment then the other principal characters. And I think this is okay, so long as the plot does affect them in a meaningful way.
A hero can demonstrate his heroism every time he's called upon to act, but in this case you then have to craft true dilemmas for them that is a struggle for their particular character.
And this will force them to dig deeper into themselves perhaps for a time revealing insecurities, fears and then the story can transform into how they overcome that to return to the shining heroic Character that they know they are, but a slightly different one.
I think the contradictions in this case can get subtle, but still ought to be there depending on the circumstances of the plot.