I'm currently making a shoot em up in monogame.

I want to add just one animation to my object. No commands or transitions between animations for different actions: just an object swapping between different images all the time.

For example, my player will have 4 different images for it and I'd want it to always swap trough these images.

Animation guides I've reviewed seem way too complicated for my needs. Unlike the examples they cover, I don't want different animations for different commands.

How can I make this type of simple, always-looping frame animation?

Edit

I managed to make a constantly looping animation to a sprite and but I don't know how to insert into myPlayer.

Game1:
        Texture2D myPlayerAnim;
        Rectangle myDestRect;
        Rectangle mySourceRect;
        Texture2D myEnemyAnim;
        Rectangle myEnemyDestRect;
        Rectangle myEnemySourceRect;
        float myElapsed;
        float myDelay = 100f;
        int myFrames = 0;

Initialize:
            myDestRect = new Rectangle(0, 0, 512, 512);
            myEnemyDestRect = new Rectangle(0, 0, 808, 608);

LoadContent: 

            myPlayerAnim = Content.Load<Texture2D>("SpriteSheetPlayerAnim");
            myEnemyAnim = Content.Load<Texture2D>("SpriteSheetEnemyAnim");

Update:    
            myElapsed += (float)aGameTime.ElapsedGameTime.TotalMilliseconds;

            if (myElapsed >= myDelay)
            {
                if (myFrames >= 3)
                {
                    myFrames = 0;
                }
                else
                {
                    myFrames++;
                }
                myElapsed = 0;
            }

            mySourceRect = new Rectangle(512 * myFrames, 0, 512, 512);
            myEnemySourceRect = new Rectangle(808 * myFrames, 0, 808, 608);

Draw: 

            mySpriteBatch.Draw(myPlayerAnim, myDestRect , mySourceRect, 
            Color.White);
            mySpriteBatch.Draw(myEnemyAnim, myEnemyDestRect, myEnemySourceRect, 
            Color.White);´

Draw just draws the animations out but I don't know how to insert it into myPlayer. For myPlayer I currently have this but I couldn't figure out how to do it with my animations.

Draw: myPlayer = new Player(TextureLibrary.GetTexture("player"), myPlayerPos, 200, new Vector2(.3f, .3f), 0, Color.White, 1000, 1);