I will give you my interpretation. The first is lost, the other three are saved. We know this because the first does not spring up, but the other three do. This is life.
Luke 8:5 A sower went out to sow his seed: and as he sowed, some fell by the way side; and it was trodden down, and the fowls of the air devoured it.
Luke 8:12 Those by the way side are they that hear; then cometh the devil, and taketh away the word out of their hearts, lest they should believe and be saved.
This is persons who hear the word. It is the same word of God sown in the others. But these persons have hearts hardened by sin. When they hear the word, they consider it. But then the devil comes in and reminds them of their favorite sins, sins they know they would have to give up if they receive the Lord. They choose their sin over Jesus.
Luke 8:6 And some fell upon a rock; and as soon as it was sprung up, it withered away, because it lacked moisture.
Luke 8:13 They on the rock are they, which, when they hear, receive the word with joy; and these have no root, which for a while believe, and in time of temptation fall away.
These are people who hear the gospel and believe it. They are saved. But when they go out and tell their friends, family, and others they are scorned and mocked. They are offended and quit going out and witnessing and therefore bare no fruit, the fruit being new believers who receive Christ through their testimony.
Luke 8:7 And some fell among thorns; and the thorns sprang up with it, and choked it.
Luke 8:14 And that which fell among thorns are they, which, when they have heard, go forth, and are choked with cares and riches and pleasures of this life, and bring no fruit to perfection.
These persons hear and believe. They are saved. But instead of living for the Lord and going out to witness to others, they get caught up with their big house, or fancy car, vacations, the distractions of the world... They bare no fruit.
Luke 8:8 And other fell on good ground, and sprang up, and bare fruit an hundredfold. And when he had said these things, he cried, He that hath ears to hear, let him hear.
Luke 8:15 But that on the good ground are they, which in an honest and good heart, having heard the word, keep it, and bring forth fruit with patience.
16 No man, when he hath lighted a candle, covereth it with a vessel, or putteth it under a bed; but setteth it on a candlestick, that they which enter in may see the light.
This is the disciple. This is the person who realizes that telling the gospel to a lost world is the most important thing they can do. They continue to witness despite being scorned and mocked, they do not allow themselves to get caught up in worldliness. They spend their time and efforts in trying to reach others for Christ. They do not hide the gospel (vs. 16). They bare much fruit.